| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | 4.75948 |
| 2021 | 6.50013 |
| 2020 | 5.25957 |
| 2019 | 4.61352 |
| 2018 | 3.9933 |
| 2017 | 5.47332 |
| 2016 | 6.95217 |
| 2015 | 5.54553 |
| 2014 | 5.36655 |
| 2013 | 5.84411 |
| 2012 | 4.68521 |
| 2011 | 5.53906 |
| 2010 | 6.12843 |
| 2009 | 8.66304 |
| 2008 | 7.85033 |
| 2007 | 8.24576 |
| 2006 | 6.06464 |
| 2005 | 5.59701 |
| 2004 | 6.04217 |
| 2003 | 6.39576 |
| 2002 | 12.538 |
| 2001 | 7.80048 |
| 2000 | 9.18219 |
| 1999 | 6.88883 |
| 1998 | 8.07574 |
| 1997 | 8.13743 |
| 1996 | 8.02209 |
| 1995 | 10.8383 |
| 1994 | 9.81219 |
| 1993 | 13.3643 |
| 1992 | 14.714 |
| 1991 | 15.6545 |
| 1990 | 15.4454 |
| 1989 | 17.0817 |
| 1988 | 15.4208 |
| 1987 | 14.848 |
| 1986 | 16.6569 |
| 1985 | 16.1443 |
| 1984 | 11.1505 |
| 1983 | 17.0691 |
| 1982 | 14.5537 |
| 1981 | 11.4064 |
| 1980 | 23.0462 |
| 1979 | 13.9617 |
| 1978 | 10.5206 |
| 1977 | 10.2565 |
| 1976 | 10.292 |
| 1975 | 10.9448 |
| 1974 | 14.8176 |
| 1973 | 17.1272 |
| 1972 | 10.7215 |
| 1971 | 5.94441 |
| 1970 | 4.69054 |
| 1969 | 7.3867 |
| 1968 | 3.92194 |
| 1967 | 3.85499 |
| 1966 | 4.12005 |
| 1965 | 3.0025 |
| 1964 | 2.04865 |
| 1963 | 3.00393 |
| 1962 | 0.183995 |
| 1961 | 1.55245 |
| 1960 | - |