Providing a month-by-month historical inflation rate for the South African Rand (ZAR) from its inception to 2021 would be a very exhaustive list. However, I can give you a general overview of some key moments and trends in South Africa’s inflation history.
For precise monthly data, you would typically want to refer directly to official sources such as Statistics South Africa or the South African Reserve Bank. They provide comprehensive datasets and reports detailing inflation rates.
Try our official Salary Inflation Calculator South Africa
Historical Inflation Data
This is the inflation index data, from 1950 to 2023, you can check and get your values:
| Month | Inflation Index | Inflation Percentage |
|---|---|---|
| 2023, June | 109.8 | 5.37 % |
| 2023, May | 109.6 | 6.30 % |
| 2023, March | 109.0 | 7.07 % |
| 2023, February | 107.9 | 7.04 % |
| 2023, January | 107.1 | 6.89 % |
| 2022, December | 107.2 | 7.20 % |
| 2022, November | 106.8 | 7.44 % |
| 2022, October | 106.5 | 7.58 % |
| 2022, September | 106.1 | 7.50 % |
| 2022, August | 106.0 | 7.61 % |
| 2022, July | 105.8 | 7.85 % |
| 2022, June | 104.2 | 7.42 % |
| 2022, May | 103.1 | 6.51 % |
| 2022, April | 102.4 | 5.89 % |
| 2022, March | 101.8 | 5.93 % |
| 2022, February | 100.8 | 5.66 % |
| 2022, January | 100.2 | 5.70 % |
| 2021, December | 100.0 | 5.88 % |
| 2021, November | 99.4 | 5.47 % |
| 2021, October | 99.0 | 4.95 % |
| 2021, September | 98.7 | 4.97 % |
| 2021, August | 98.5 | 4.89 % |
| 2021, July | 98.1 | 4.64 % |
| 2021, June | 97.0 | 4.87 % |
| 2021, May | 96.8 | 5.16 % |
| 2021, April | 96.7 | 4.43 % |
| 2021, March | 96.1 | 3.20 % |
| 2021, February | 95.4 | 2.86 % |
| 2021, January | 94.8 | 3.16 % |
| 2020, December | 94.4 | 3.08 % |
| 2020, November | 94.3 | 3.17 % |
| 2020, October | 94.3 | 3.26 % |
| 2020, September | 94.0 | 3.00 % |
| 2020, August | 93.9 | 3.09 % |
| 2020, July | 93.7 | 3.19 % |
| 2020, June | 92.5 | 2.22 % |
| 2020, May | 92.0 | 2.05 % |
| 2020, April | 92.6 | 2.95 % |
| 2020, March | 93.1 | 4.14 % |
| 2020, February | 92.8 | 4.63 % |
| 2020, January | 91.9 | 4.49 % |
| 2019, December | 91.6 | 4.02 % |
| 2019, November | 91.4 | 3.56 % |
| 2019, October | 91.3 | 3.66 % |
| 2019, September | 91.3 | 4.13 % |
| 2019, August | 91.1 | 4.34 % |
| 2019, July | 90.8 | 3.96 % |
| 2019, June | 90.5 | 4.46 % |
| 2019, May | 90.2 | 4.48 % |
| 2019, April | 89.9 | 4.39 % |
| 2019, March | 89.4 | 4.52 % |
| 2019, February | 88.7 | 4.06 % |
| 2019, January | 87.9 | 4.00 % |
| 2018, December | 88.1 | 4.49 % |
| 2018, November | 88.2 | 5.18 % |
| 2018, October | 88.1 | 5.09 % |
| 2018, September | 87.7 | 4.91 % |
| 2018, August | 87.3 | 4.94 % |
| 2018, July | 87.4 | 5.14 % |
| 2018, June | 86.6 | 4.57 % |
| 2018, May | 86.3 | 4.38 % |
| 2018, April | 86.2 | 4.49 % |
| 2018, March | 85.5 | 3.81 % |
| 2018, February | 85.2 | 4.03 % |
| 2018, January | 84.5 | 4.37 % |
| 2017, December | 84.3 | 4.70 % |
| 2017, November | 83.9 | 4.62 % |
| 2017, October | 83.8 | 4.83 % |
| 2017, September | 83.6 | 5.06 % |
| 2017, August | 83.2 | 4.77 % |
| 2017, July | 83.1 | 4.56 % |
| 2017, June | 82.9 | 5.11 % |
| 2017, May | 82.7 | 5.44 % |
| 2017, April | 82.5 | 5.35 % |
| 2017, March | 82.4 | 6.12 % |
| 2017, February | 81.9 | 6.27 % |
| 2017, January | 81.0 | 6.57 % |
| 2016, December | 80.5 | 6.76 % |
| 2016, November | 80.2 | 6.61 % |
| 2016, October | 79.9 | 6.36 % |
| 2016, September | 79.6 | 6.12 % |
| 2016, August | 79.4 | 5.94 % |
| 2016, July | 79.5 | 6.03 % |
| 2016, June | 78.8 | 6.27 % |
| 2016, May | 78.4 | 6.12 % |
| 2016, April | 78.3 | 6.22 % |
| 2016, March | 77.6 | 6.28 % |
| 2016, February | 77.0 | 7.00 % |
| 2016, January | 76.0 | 6.23 % |
| 2015, December | 75.4 | 5.23 % |
| 2015, November | 75.2 | 4.77 % |
| 2015, October | 75.2 | 4.68 % |
| 2015, September | 75.0 | 4.59 % |
| 2015, August | 75.0 | 4.59 % |
| 2015, July | 75.0 | 4.97 % |
| 2015, June | 74.2 | 4.74 % |
| 2015, May | 73.9 | 4.57 % |
| 2015, April | 73.7 | 4.49 % |
| 2015, March | 73.0 | 4.05 % |
| 2015, February | 72.0 | 3.91 % |
| 2015, January | 71.5 | 4.43 % |
| 2014, December | 71.7 | 5.31 % |
| 2014, November | 71.8 | 5.80 % |
| 2014, October | 71.8 | 5.90 % |
| 2014, September | 71.7 | 5.92 % |
| 2014, August | 71.7 | 6.42 % |
| 2014, July | 71.4 | 6.35 % |
| 2014, June | 70.8 | 6.61 % |
| 2014, May | 70.6 | 6.63 % |
| 2014, April | 70.5 | 6.12 % |
| 2014, March | 70.2 | 6.05 % |
| 2014, February | 69.3 | 5.92 % |
| 2014, January | 68.5 | 5.78 % |
| 2013, December | 68.1 | 5.40 % |
| 2013, November | 67.9 | 5.31 % |
| 2013, October | 67.8 | 5.53 % |
| 2013, September | 67.7 | 5.97 % |
| 2013, August | 67.3 | 6.43 % |
| 2013, July | 67.2 | 6.34 % |
| 2013, June | 66.4 | 5.54 % |
| 2013, May | 66.3 | 5.56 % |
| 2013, April | 66.4 | 5.86 % |
| 2013, March | 66.2 | 5.89 % |
| 2013, February | 65.4 | 5.85 % |
| 2013, January | 64.8 | 5.36 % |
| 2012, December | 64.6 | 5.71 % |
| 2012, November | 64.4 | 5.61 % |
| 2012, October | 64.2 | 5.63 % |
| 2012, September | 63.9 | 5.44 % |
| 2012, August | 63.3 | 4.93 % |
| 2012, July | 63.2 | 4.94 % |
| 2012, June | 63.0 | 5.52 % |
| 2012, May | 62.8 | 5.65 % |
| 2012, April | 62.8 | 6.11 % |
| 2012, March | 62.5 | 6.02 % |
| 2012, February | 61.8 | 6.10 % |
| 2012, January | 61.5 | 6.25 % |
| 2011, December | 61.1 | 6.05 % |
| 2011, November | 61.0 | 6.18 % |
| 2011, October | 60.8 | 5.96 % |
| 2011, September | 60.6 | 5.75 % |
| 2011, August | 60.3 | 5.42 % |
| 2011, July | 60.2 | 5.19 % |
| 2011, June | 59.7 | 5.00 % |
| 2011, May | 59.4 | 4.55 % |
| 2011, April | 59.2 | 4.33 % |
| 2011, March | 59.0 | 4.10 % |
| 2011, February | 58.2 | 3.68 % |
| 2011, January | 57.9 | 3.70 % |
| 2010, December | 57.6 | 3.48 % |
| 2010, November | 57.5 | 3.49 % |
| 2010, October | 57.4 | 3.37 % |
| 2010, September | 57.3 | 3.14 % |
| 2010, August | 57.2 | 3.50 % |
| 2010, July | 57.2 | 3.75 % |
| 2010, June | 56.8 | 4.14 % |
| 2010, May | 56.8 | 4.64 % |
| 2010, April | 56.7 | 4.77 % |
| 2010, March | 56.6 | 5.16 % |
| 2010, February | 56.2 | 5.71 % |
| 2010, January | 55.8 | 6.14 % |
| 2009, December | 55.7 | 6.29 % |
| 2009, November | 55.5 | 4.88 % |
| 2009, October | 55.5 | 5.01 % |
| 2009, September | 55.5 | 5.01 % |
| 2009, August | 55.3 | 4.65 % |
| 2009, July | 55.1 | 5.17 % |
| 2009, June | 54.6 | 6.16 % |
| 2009, May | 54.3 | 7.13 % |
| 2009, April | 54.1 | 7.85 % |
| 2009, March | 53.9 | 9.31 % |
| 2009, February | 53.1 | 9.59 % |
| 2009, January | 52.6 | 8.82 % |
| 2008, December | 52.4 | 9.59 % |
| 2008, November | 53.0 | 11.72 % |
| 2008, October | 52.9 | 12.04 % |
| 2008, September | 52.9 | 12.97 % |
| 2008, August | 52.8 | 13.77 % |
| 2008, July | 52.4 | 13.41 % |
| 2008, June | 51.4 | 12.27 % |
| 2008, May | 50.7 | 11.66 % |
| 2008, April | 50.2 | 11.16 % |
| 2008, March | 49.3 | 10.58 % |
| 2008, February | 48.5 | 9.80 % |
| 2008, January | 48.3 | 9.20 % |
| 2007, December | 47.8 | 8.82 % |
| 2007, November | 47.4 | 8.58 % |
| 2007, October | 47.2 | 7.98 % |
| 2007, September | 46.8 | 7.25 % |
| 2007, August | 46.4 | 6.68 % |
| 2007, July | 46.2 | 7.03 % |
| 2007, June | 45.8 | 7.10 % |
| 2007, May | 45.4 | 7.00 % |
| 2007, April | 45.1 | 6.88 % |
| 2007, March | 44.6 | 6.15 % |
| 2007, February | 44.2 | 5.72 % |
| 2007, January | 44.2 | 6.04 % |
| 2006, December | 43.9 | 5.92 % |
| 2006, November | 43.7 | 5.30 % |
| 2006, October | 43.7 | 5.45 % |
| 2006, September | 43.7 | 5.30 % |
| 2006, August | 43.5 | 5.48 % |
| 2006, July | 43.2 | 5.02 % |
| 2006, June | 42.8 | 4.91 % |
| 2006, May | 42.4 | 3.96 % |
| 2006, April | 42.2 | 3.48 % |
| 2006, March | 42.0 | 3.34 % |
| 2006, February | 41.8 | 3.85 % |
| 2006, January | 41.7 | 3.86 % |
| 2005, December | 41.5 | 3.55 % |
| 2005, November | 41.5 | 3.38 % |
| 2005, October | 41.5 | 3.88 % |
| 2005, September | 41.5 | 4.22 % |
| 2005, August | 41.3 | 3.73 % |
| 2005, July | 41.1 | 3.41 % |
| 2005, June | 40.7 | 2.77 % |
| 2005, May | 40.8 | 3.27 % |
| 2005, April | 40.8 | 3.27 % |
| 2005, March | 40.6 | 2.95 % |
| 2005, February | 40.2 | 2.64 % |
| 2005, January | 40.2 | 2.98 % |
| 2004, December | 40.0 | 3.51 % |
| 2004, November | 40.1 | 3.67 % |
| 2004, October | 39.9 | 2.49 % |
| 2004, September | 39.8 | 1.48 % |
| 2004, August | 39.8 | 1.15 % |
| 2004, July | 39.8 | 1.48 % |
| 2004, June | 39.7 | 1.15 % |
| 2004, May | 39.5 | 0.49 % |
| 2004, April | 39.5 | 0.33 % |
| 2004, March | 39.5 | 0.33 % |
| 2004, February | 39.2 | 0.83 % |
| 2004, January | 39.0 | 0.17 % |
| 2003, December | 38.7 | 0.34 % |
| 2003, November | 38.7 | 0.34 % |
| 2003, October | 38.9 | 1.52 % |
| 2003, September | 39.2 | 3.58 % |
| 2003, August | 39.3 | 5.18 % |
| 2003, July | 39.2 | 5.20 % |
| 2003, June | 39.2 | 6.87 % |
| 2003, May | 39.3 | 7.98 % |
| 2003, April | 39.4 | 8.93 % |
| 2003, March | 39.3 | 10.33 % |
| 2003, February | 38.9 | 10.26 % |
| 2003, January | 38.9 | 11.46 % |
| 2002, December | 38.5 | 12.43 % |
| 2002, November | 38.5 | 12.85 % |
| 2002, October | 38.4 | 12.93 % |
| 2002, September | 37.8 | 11.41 % |
| 2002, August | 37.4 | 10.29 % |
| 2002, July | 37.3 | 9.70 % |
| 2002, June | 36.7 | 7.98 % |
| 2002, May | 36.4 | 7.63 % |
| 2002, April | 36.2 | 7.28 % |
| 2002, March | 35.6 | 6.36 % |
| 2002, February | 35.3 | 5.81 % |
| 2002, January | 34.9 | 5.05 % |
| 2001, December | 34.3 | 4.53 % |
| 2001, November | 34.2 | 4.34 % |
| 2001, October | 34.0 | 3.95 % |
| 2001, September | 34.0 | 4.37 % |
| 2001, August | 33.9 | 4.58 % |
| 2001, July | 34.0 | 5.20 % |
| 2001, June | 34.0 | 6.05 % |
| 2001, May | 33.8 | 6.29 % |
| 2001, April | 33.7 | 6.53 % |
| 2001, March | 33.5 | 7.23 % |
| 2001, February | 33.3 | 7.72 % |
| 2001, January | 33.3 | 7.07 % |
| 2000, December | 32.8 | 6.95 % |
| 2000, November | 32.7 | 6.96 % |
| 2000, October | 32.7 | 6.98 % |
| 2000, September | 32.5 | 7.01 % |
| 2000, August | 32.4 | 6.81 % |
| 2000, July | 32.3 | 6.16 % |
| 2000, June | 32.0 | 5.31 % |
| 2000, May | 31.8 | 5.12 % |
| 2000, April | 31.6 | 4.48 % |
| 2000, March | 31.3 | 3.42 % |
| 2000, February | 30.9 | 2.35 % |
| 2000, January | 31.1 | 2.78 % |
| 1999, December | 30.7 | 2.15 % |
| 1999, November | 30.6 | 1.94 % |
| 1999, October | 30.5 | 1.72 % |
| 1999, September | 30.4 | 1.73 % |
| 1999, August | 30.4 | 3.30 % |
| 1999, July | 30.4 | 4.67 % |
| 1999, June | 30.4 | 7.05 % |
| 1999, May | 30.3 | 7.08 % |
| 1999, April | 30.3 | 7.57 % |
| 1999, March | 30.2 | 7.83 % |
| 1999, February | 30.2 | 8.58 % |
| 1999, January | 30.2 | 8.84 % |
| 1998, December | 30.0 | 9.15 % |
| 1998, November | 30.0 | 9.41 % |
| 1998, October | 30.0 | 9.15 % |
| 1998, September | 29.9 | 8.94 % |
| 1998, August | 29.4 | 7.82 % |
| 1998, July | 29.1 | 6.64 % |
| 1998, June | 28.4 | 5.26 % |
| 1998, May | 28.3 | 5.04 % |
| 1998, April | 28.2 | 5.06 % |
| 1998, March | 28.0 | 5.60 % |
| 1998, February | 27.8 | 5.38 % |
| 1998, January | 27.8 | 5.91 % |
| 1997, December | 27.5 | 5.97 % |
| 1997, November | 27.4 | 6.78 % |
| 1997, October | 27.5 | 7.58 % |
| 1997, September | 27.4 | 8.42 % |
| 1997, August | 27.3 | 8.76 % |
| 1997, July | 27.3 | 9.04 % |
| 1997, June | 27.0 | 8.85 % |
| 1997, May | 26.9 | 9.74 % |
| 1997, April | 26.8 | 9.79 % |
| 1997, March | 26.5 | 9.60 % |
| 1997, February | 26.4 | 9.65 % |
| 1997, January | 26.2 | 9.14 % |
| 1996, December | 26.0 | 9.54 % |
| 1996, November | 25.7 | 9.04 % |
| 1996, October | 25.6 | 9.09 % |
| 1996, September | 25.3 | 8.29 % |
| 1996, August | 25.1 | 7.18 % |
| 1996, July | 25.0 | 7.20 % |
| 1996, June | 24.8 | 6.96 % |
| 1996, May | 24.5 | 5.85 % |
| 1996, April | 24.4 | 5.59 % |
| 1996, March | 24.2 | 5.93 % |
| 1996, February | 24.1 | 6.57 % |
| 1996, January | 24.0 | 6.90 % |
| 1995, December | 23.7 | 7.00 % |
| 1995, November | 23.6 | 6.41 % |
| 1995, October | 23.4 | 6.14 % |
| 1995, September | 23.4 | 6.47 % |
| 1995, August | 23.4 | 7.74 % |
| 1995, July | 23.3 | 9.06 % |
| 1995, June | 23.2 | 10.12 % |
| 1995, May | 23.2 | 10.80 % |
| 1995, April | 23.1 | 11.18 % |
| 1995, March | 22.9 | 10.63 % |
| 1995, February | 22.6 | 10.06 % |
| 1995, January | 22.5 | 9.78 % |
| 1994, December | 22.2 | 9.58 % |
| 1994, November | 22.2 | 9.94 % |
| 1994, October | 22.1 | 9.97 % |
| 1994, September | 22.0 | 10.03 % |
| 1994, August | 21.7 | 9.09 % |
| 1994, July | 21.4 | 8.17 % |
| 1994, June | 21.1 | 7.24 % |
| 1994, May | 20.9 | 7.28 % |
| 1994, April | 20.8 | 6.98 % |
| 1994, March | 20.7 | 8.84 % |
| 1994, February | 20.5 | 9.66 % |
| 1994, January | 20.5 | 9.69 % |
| 1993, December | 20.2 | 9.44 % |
| 1993, November | 20.1 | 9.09 % |
| 1993, October | 20.1 | 9.51 % |
| 1993, September | 20.0 | 9.19 % |
| 1993, August | 19.9 | 9.22 % |
| 1993, July | 19.8 | 9.68 % |
| 1993, June | 19.6 | 10.14 % |
| 1993, May | 19.5 | 10.62 % |
| 1993, April | 19.4 | 10.66 % |
| 1993, March | 19.0 | 9.70 % |
| 1993, February | 18.7 | 9.02 % |
| 1993, January | 18.7 | 9.47 % |
| 1992, December | 18.5 | 10.00 % |
| 1992, November | 18.5 | 11.28 % |
| 1992, October | 18.3 | 11.81 % |
| 1992, September | 18.3 | 13.20 % |
| 1992, August | 18.2 | 14.63 % |
| 1992, July | 18.0 | 14.81 % |
| 1992, June | 17.8 | 15.00 % |
| 1992, May | 17.6 | 14.71 % |
| 1992, April | 17.6 | 15.74 % |
| 1992, March | 17.3 | 16.02 % |
| 1992, February | 17.2 | 15.65 % |
| 1992, January | 17.1 | 16.30 % |
| 1991, December | 16.8 | 16.07 % |
| 1991, November | 16.6 | 15.25 % |
| 1991, October | 16.4 | 16.51 % |
| 1991, September | 16.1 | 15.74 % |
| 1991, August | 15.9 | 15.49 % |
| 1991, July | 15.7 | 15.71 % |
| 1991, June | 15.5 | 15.38 % |
| 1991, May | 15.4 | 14.98 % |
| 1991, April | 15.2 | 15.20 % |
| 1991, March | 14.9 | 13.79 % |
| 1991, February | 14.9 | 15.00 % |
| 1991, January | 14.7 | 14.65 % |
| 1990, December | 14.5 | 14.29 % |
| 1990, November | 14.4 | 15.54 % |
| 1990, October | 14.1 | 14.14 % |
| 1990, September | 14.0 | 14.29 % |
| 1990, August | 13.8 | 13.30 % |
| 1990, July | 13.6 | 13.51 % |
| 1990, June | 13.4 | 13.66 % |
| 1990, May | 13.4 | 13.74 % |
| 1990, April | 13.2 | 13.97 % |
| 1990, March | 13.1 | 14.69 % |
| 1990, February | 12.9 | 14.94 % |
| 1990, January | 12.8 | 15.12 % |
| 1989, December | 12.7 | 15.29 % |
| 1989, November | 12.5 | 14.88 % |
| 1989, October | 12.3 | 14.37 % |
| 1989, September | 12.2 | 14.55 % |
| 1989, August | 12.1 | 15.34 % |
| 1989, July | 12.0 | 14.91 % |
| 1989, June | 11.8 | 15.09 % |
| 1989, May | 11.8 | 15.19 % |
| 1989, April | 11.6 | 14.74 % |
| 1989, March | 11.4 | 14.19 % |
| 1989, February | 11.2 | 14.47 % |
| 1989, January | 11.1 | 13.16 % |
| 1988, December | 11.0 | 12.58 % |
| 1988, November | 10.9 | 12.00 % |
| 1988, October | 10.8 | 12.84 % |
| 1988, September | 10.7 | 12.24 % |
| 1988, August | 10.5 | 13.19 % |
| 1988, July | 10.4 | 13.38 % |
| 1988, June | 10.3 | 12.77 % |
| 1988, May | 10.2 | 12.86 % |
| 1988, April | 10.1 | 12.23 % |
| 1988, March | 10.0 | 13.14 % |
| 1988, February | 9.8 | 12.59 % |
| 1988, January | 9.8 | 14.29 % |
| 1987, December | 9.8 | 15.27 % |
| 1987, November | 9.7 | 15.38 % |
| 1987, October | 9.6 | 14.73 % |
| 1987, September | 9.5 | 15.75 % |
| 1987, August | 9.3 | 15.20 % |
| 1987, July | 9.2 | 15.45 % |
| 1987, June | 9.1 | 16.53 % |
| 1987, May | 9.0 | 17.65 % |
| 1987, April | 9.0 | 16.81 % |
| 1987, March | 8.9 | 17.09 % |
| 1987, February | 8.7 | 17.39 % |
| 1987, January | 8.6 | 16.67 % |
| 1986, December | 8.5 | 18.02 % |
| 1986, November | 8.4 | 19.27 % |
| 1986, October | 8.3 | 20.56 % |
| 1986, September | 8.2 | 19.81 % |
| 1986, August | 8.1 | 19.05 % |
| 1986, July | 7.9 | 19.42 % |
| 1986, June | 7.8 | 17.48 % |
| 1986, May | 7.7 | 16.67 % |
| 1986, April | 7.7 | 17.82 % |
| 1986, March | 7.6 | 19.39 % |
| 1986, February | 7.4 | 17.35 % |
| 1986, January | 7.4 | 20.00 % |
| 1985, December | 7.2 | 18.09 % |
| 1985, November | 7.0 | 17.20 % |
| 1985, October | 6.9 | 16.30 % |
| 1985, September | 6.8 | 16.48 % |
| 1985, August | 6.8 | 16.67 % |
| 1985, July | 6.7 | 15.73 % |
| 1985, June | 6.7 | 17.05 % |
| 1985, May | 6.6 | 15.91 % |
| 1985, April | 6.5 | 16.09 % |
| 1985, March | 6.3 | 15.29 % |
| 1985, February | 6.3 | 16.67 % |
| 1985, January | 6.1 | 13.10 % |
| 1984, December | 6.1 | 13.25 % |
| 1984, November | 6.0 | 12.05 % |
| 1984, October | 5.9 | 12.20 % |
| 1984, September | 5.9 | 12.35 % |
| 1984, August | 5.8 | 11.11 % |
| 1984, July | 5.8 | 11.25 % |
| 1984, June | 5.7 | 11.39 % |
| 1984, May | 5.7 | 11.39 % |
| 1984, April | 5.6 | 11.54 % |
| 1984, March | 5.5 | 10.39 % |
| 1984, February | 5.4 | 9.09 % |
| 1984, January | 5.4 | 12.00 % |
| 1983, December | 5.4 | 10.67 % |
| 1983, November | 5.4 | 10.67 % |
| 1983, October | 5.3 | 10.81 % |
| 1983, September | 5.2 | 10.96 % |
| 1983, August | 5.2 | 12.50 % |
| 1983, July | 5.2 | 12.68 % |
| 1983, June | 5.1 | 12.86 % |
| 1983, May | 5.1 | 12.86 % |
| 1983, April | 5.0 | 13.04 % |
| 1983, March | 5.0 | 11.59 % |
| 1983, February | 5.0 | 14.93 % |
| 1983, January | 4.8 | 13.64 % |
| 1982, December | 4.8 | 13.64 % |
| 1982, November | 4.8 | 13.64 % |
| 1982, October | 4.8 | 13.85 % |
| 1982, September | 4.7 | 12.31 % |
| 1982, August | 4.7 | 14.29 % |
| 1982, July | 4.6 | 14.52 % |
| 1982, June | 4.5 | 14.75 % |
| 1982, May | 4.5 | 16.67 % |
| 1982, April | 4.5 | 16.95 % |
| 1982, March | 4.5 | 16.95 % |
| 1982, February | 4.3 | 13.56 % |
| 1982, January | 4.3 | 13.79 % |
| 1981, December | 4.3 | 13.79 % |
| 1981, November | 4.3 | 15.79 % |
| 1981, October | 4.2 | 14.04 % |
| 1981, September | 4.2 | 18.18 % |
| 1981, August | 4.1 | 16.67 % |
| 1981, July | 4.0 | 14.81 % |
| 1981, June | 3.9 | 15.09 % |
| 1981, May | 3.9 | 15.38 % |
| 1981, April | 3.8 | 15.69 % |
| 1981, March | 3.8 | 15.69 % |
| 1981, February | 3.8 | 15.69 % |
| 1981, January | 3.7 | 16.00 % |
| 1980, December | 3.7 | 16.00 % |
| 1980, November | 3.7 | 16.33 % |
| 1980, October | 3.7 | 16.33 % |
| 1980, September | 3.6 | 12.24 % |
| 1980, August | 3.5 | 12.50 % |
| 1980, July | 3.5 | 12.50 % |
| 1980, June | 3.4 | 15.22 % |
| 1980, May | 3.4 | 15.56 % |
| 1980, April | 3.3 | 13.33 % |
| 1980, March | 3.3 | 13.33 % |
| 1980, February | 3.3 | 15.91 % |
| 1980, January | 3.2 | 13.64 % |
| 1979, December | 3.2 | 16.28 % |
| 1979, November | 3.2 | 13.95 % |
| 1979, October | 3.2 | 13.95 % |
| 1979, September | 3.2 | 13.95 % |
| 1979, August | 3.1 | 14.29 % |
| 1979, July | 3.1 | 14.29 % |
| 1979, June | 3.0 | 15.00 % |
| 1979, May | 2.9 | 12.50 % |
| 1979, April | 2.9 | 12.50 % |
| 1979, March | 2.9 | 15.38 % |
| 1979, February | 2.8 | 12.82 % |
| 1979, January | 2.8 | 12.82 % |
| 1978, December | 2.8 | 10.26 % |
| 1978, November | 2.8 | 13.16 % |
| 1978, October | 2.8 | 13.16 % |
| 1978, September | 2.8 | 13.16 % |
| 1978, August | 2.7 | 10.53 % |
| 1978, July | 2.7 | 13.51 % |
| 1978, June | 2.6 | 8.11 % |
| 1978, May | 2.6 | 8.11 % |
| 1978, April | 2.6 | 8.11 % |
| 1978, March | 2.5 | 8.33 % |
| 1978, February | 2.5 | 8.33 % |
| 1978, January | 2.5 | 8.33 % |
| 1977, December | 2.5 | 11.43 % |
| 1977, November | 2.5 | 8.57 % |
| 1977, October | 2.5 | 8.57 % |
| 1977, September | 2.5 | 8.57 % |
| 1977, August | 2.5 | 8.57 % |
| 1977, July | 2.4 | 8.82 % |
| 1977, June | 2.4 | 8.82 % |
| 1977, May | 2.4 | 12.12 % |
| 1977, April | 2.4 | 12.12 % |
| 1977, March | 2.3 | 9.09 % |
| 1977, February | 2.3 | 12.50 % |
| 1977, January | 2.3 | 12.50 % |
| 1976, December | 2.3 | 9.38 % |
| 1976, November | 2.3 | 9.38 % |
| 1976, October | 2.3 | 12.90 % |
| 1976, September | 2.3 | 12.90 % |
| 1976, August | 2.3 | 12.90 % |
| 1976, July | 2.2 | 9.68 % |
| 1976, June | 2.2 | 13.33 % |
| 1976, May | 2.1 | 10.00 % |
| 1976, April | 2.1 | 10.00 % |
| 1976, March | 2.1 | 13.79 % |
| 1976, February | 2.1 | 10.34 % |
| 1976, January | 2.1 | 10.34 % |
| 1975, December | 2.1 | 14.29 % |
| 1975, November | 2.1 | 14.29 % |
| 1975, October | 2.0 | 10.71 % |
| 1975, September | 2.0 | 10.71 % |
| 1975, August | 2.0 | 14.81 % |
| 1975, July | 2.0 | 14.81 % |
| 1975, June | 1.9 | 11.11 % |
| 1975, May | 1.9 | 15.38 % |
| 1975, April | 1.9 | 15.38 % |
| 1975, March | 1.9 | 11.54 % |
| 1975, February | 1.9 | 16.00 % |
| 1975, January | 1.9 | 16.00 % |
| 1974, December | 1.8 | 12.00 % |
| 1974, November | 1.8 | 12.00 % |
| 1974, October | 1.8 | 12.00 % |
| 1974, September | 1.8 | 16.67 % |
| 1974, August | 1.8 | 12.50 % |
| 1974, July | 1.8 | 12.50 % |
| 1974, June | 1.8 | 12.50 % |
| 1974, May | 1.7 | 8.33 % |
| 1974, April | 1.7 | 8.33 % |
| 1974, March | 1.7 | 13.04 % |
| 1974, February | 1.6 | 8.70 % |
| 1974, January | 1.6 | 8.70 % |
| 1973, December | 1.6 | 8.70 % |
| 1973, November | 1.6 | 8.70 % |
| 1973, October | 1.6 | 8.70 % |
| 1973, September | 1.6 | 9.09 % |
| 1973, August | 1.6 | 9.09 % |
| 1973, July | 1.6 | 9.09 % |
| 1973, June | 1.6 | 14.29 % |
| 1973, May | 1.6 | 14.29 % |
| 1973, April | 1.6 | 14.29 % |
| 1973, March | 1.5 | 9.52 % |
| 1973, February | 1.5 | 9.52 % |
| 1973, January | 1.5 | 9.52 % |
| 1972, December | 1.5 | 9.52 % |
| 1972, November | 1.5 | 9.52 % |
| 1972, October | 1.5 | 9.52 % |
| 1972, September | 1.4 | 4.76 % |
| 1972, August | 1.4 | 4.76 % |
| 1972, July | 1.4 | 10.00 % |
| 1972, June | 1.4 | 5.00 % |
| 1972, May | 1.4 | 5.00 % |
| 1972, April | 1.4 | 5.00 % |
| 1972, March | 1.4 | 5.00 % |
| 1972, February | 1.4 | 5.00 % |
| 1972, January | 1.4 | 5.00 % |
| 1971, December | 1.4 | 5.00 % |
| 1971, November | 1.4 | 5.00 % |
| 1971, October | 1.4 | 5.00 % |
| 1971, September | 1.4 | 5.00 % |
| 1971, August | 1.4 | 5.00 % |
| 1971, July | 1.3 | 5.26 % |
| 1971, June | 1.3 | 5.26 % |
| 1971, May | 1.3 | 5.26 % |
| 1971, April | 1.3 | 5.26 % |
| 1971, March | 1.3 | 5.26 % |
| 1971, February | 1.3 | 5.26 % |
| 1971, January | 1.3 | 5.26 % |
| 1970, December | 1.3 | 5.26 % |
| 1970, November | 1.3 | 5.26 % |
| 1970, October | 1.3 | 5.26 % |
| 1970, September | 1.3 | 11.11 % |
| 1970, August | 1.3 | 11.11 % |
| 1970, July | 1.2 | 5.56 % |
| 1970, June | 1.2 | 5.56 % |
| 1970, May | 1.2 | 5.56 % |
| 1970, April | 1.2 | 5.56 % |
| 1970, March | 1.2 | 5.56 % |
| 1970, February | 1.2 | 5.56 % |
| 1970, January | 1.2 | 5.56 % |
| 1969, December | 1.2 | 5.56 % |
| 1969, November | 1.2 | 5.56 % |
| 1969, October | 1.2 | 5.56 % |
| 1969, September | 1.2 | |
| 1969, August | 1.2 | |
| 1969, July | 1.2 | |
| 1969, June | 1.2 | 5.88 % |
| 1969, May | 1.2 | 5.88 % |
| 1969, April | 1.2 | 5.88 % |
| 1969, March | 1.2 | 5.88 % |
| 1969, February | 1.2 | 5.88 % |
| 1969, January | 1.2 | 5.88 % |
| 1968, December | 1.2 | 5.88 % |
| 1968, November | 1.2 | 5.88 % |
| 1968, October | 1.2 | 5.88 % |
| 1968, September | 1.2 | 5.88 % |
| 1968, August | 1.2 | 5.88 % |
| 1968, July | 1.2 | 5.88 % |
| 1968, June | 1.1 | |
| 1968, May | 1.1 | |
| 1968, April | 1.1 | |
| 1968, March | 1.1 | |
| 1968, February | 1.1 | |
| 1968, January | 1.1 | |
| 1967, December | 1.1 | |
| 1967, November | 1.1 | |
| 1967, October | 1.1 | |
| 1967, September | 1.1 | |
| 1967, August | 1.1 | |
| 1967, July | 1.1 | |
| 1967, June | 1.1 | |
| 1967, May | 1.1 | |
| 1967, April | 1.1 | |
| 1967, March | 1.1 | |
| 1967, February | 1.1 | 6.25 % |
| 1967, January | 1.1 | 6.25 % |
| 1966, December | 1.1 | 6.25 % |
| 1966, November | 1.1 | 6.25 % |
| 1966, October | 1.1 | 6.25 % |
| 1966, September | 1.1 | 6.25 % |
| 1966, August | 1.1 | 6.25 % |
| 1966, July | 1.1 | 6.25 % |
| 1966, June | 1.1 | 6.25 % |
| 1966, May | 1.1 | 6.25 % |
| 1966, April | 1.1 | 6.25 % |
| 1966, March | 1.1 | 6.25 % |
| 1966, February | 1.0 | |
| 1966, January | 1.0 | |
| 1965, December | 1.0 | |
| 1965, November | 1.0 | |
| 1965, October | 1.0 | |
| 1965, September | 1.0 | |
| 1965, August | 1.0 | |
| 1965, July | 1.0 | |
| 1965, June | 1.0 | |
| 1965, May | 1.0 | |
| 1965, April | 1.0 | |
| 1965, March | 1.0 | 6.67 % |
| 1965, February | 1.0 | 6.67 % |
| 1965, January | 1.0 | 6.67 % |
| 1964, December | 1.0 | 6.67 % |
| 1964, November | 1.0 | 6.67 % |
| 1964, October | 1.0 | 6.67 % |
| 1964, September | 1.0 | 6.67 % |
| 1964, August | 1.0 | 6.67 % |
| 1964, July | 1.0 | 6.67 % |
| 1964, June | 1.0 | 6.67 % |
| 1964, May | 1.0 | 6.67 % |
| 1964, April | 1.0 | 6.67 % |
| 1964, March | 1.0 | |
| 1964, February | 1.0 | |
| 1964, January | 1.0 | |
| 1963, December | 1.0 | |
| 1963, November | 1.0 | |
| 1963, October | 1.0 | |
| 1963, September | 1.0 | |
| 1963, August | 1.0 | |
| 1963, July | 1.0 | |
| 1963, June | 1.0 | |
| 1963, May | 1.0 | |
| 1963, April | 1.0 | |
| 1963, March | 1.0 | |
| 1963, February | 1.0 | |
| 1963, January | 1.0 | |
| 1962, December | 1.0 | |
| 1962, November | 1.0 | |
| 1962, October | 1.0 | |
| 1962, September | 1.0 | |
| 1962, August | 1.0 | |
| 1962, July | 1.0 | |
| 1962, June | 1.0 | |
| 1962, May | 1.0 | |
| 1962, April | 1.0 | |
| 1962, March | 1.0 | |
| 1962, February | 1.0 | |
| 1962, January | 1.0 | |
| 1961, December | 1.0 | |
| 1961, November | 1.0 | |
| 1961, October | 1.0 | |
| 1961, September | 1.0 | |
| 1961, August | 1.0 | |
| 1961, July | 1.0 | |
| 1961, June | 1.0 | |
| 1961, May | 1.0 | |
| 1961, April | 1.0 | |
| 1961, March | 1.0 | |
| 1961, February | 1.0 | |
| 1961, January | 1.0 | |
| 1960, December | 1.0 | |
| 1960, November | 1.0 | |
| 1960, October | 1.0 | |
| 1960, September | 1.0 | |
| 1960, August | 1.0 | |
| 1960, July | 1.0 | |
| 1960, June | 1.0 | |
| 1960, May | 1.0 | |
| 1960, April | 1.0 | |
| 1960, March | 1.0 | |
| 1960, February | 1.0 | |
| 1960, January | 1.0 |