| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | 5.38461 |
| 2021 | 5.55198 |
| 2020 | 5.61916 |
| 2019 | 5.59193 |
| 2018 | 5.48587 |
| 2017 | 5.32341 |
| 2016 | 5.11438 |
| 2015 | 4.90801 |
| 2014 | 4.72427 |
| 2013 | 4.55036 |
| 2012 | 4.39964 |
| 2011 | 4.27697 |
| 2010 | 4.19258 |
| 2009 | 4.15629 |
| 2008 | 4.1651 |
| 2007 | 4.20245 |
| 2006 | 4.25071 |
| 2005 | 4.29218 |
| 2004 | 4.30757 |
| 2003 | 4.29982 |
| 2002 | 4.2647 |
| 2001 | 4.19476 |
| 2000 | 4.10057 |
| 1999 | 3.99147 |
| 1998 | 3.8575 |
| 1997 | 3.70927 |
| 1996 | 3.59614 |
| 1995 | 3.51765 |
| 1994 | 3.44197 |
| 1993 | 3.36687 |
| 1992 | 3.29099 |
| 1991 | 3.18937 |
| 1990 | 3.06779 |
| 1989 | 2.95509 |
| 1988 | 2.865 |
| 1987 | 2.80924 |
| 1986 | 2.79083 |
| 1985 | 2.83124 |
| 1984 | 2.90966 |
| 1983 | 2.97933 |
| 1982 | 3.03803 |
| 1981 | 3.08281 |
| 1980 | 3.10536 |
| 1979 | 3.10969 |
| 1978 | 3.1103 |
| 1977 | 3.1073 |
| 1976 | 3.10801 |
| 1975 | 3.11365 |
| 1974 | 3.12007 |
| 1973 | 3.12852 |
| 1972 | 3.13903 |
| 1971 | 3.15178 |
| 1970 | 3.17117 |
| 1969 | 3.19733 |
| 1968 | 3.22465 |
| 1967 | 3.25149 |
| 1966 | 3.27666 |
| 1965 | 3.29931 |
| 1964 | 3.31878 |
| 1963 | 3.33457 |
| 1962 | 3.34657 |
| 1961 | 3.35456 |
| 1960 | 3.37303 |