| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 2.374 |
| 2020 | 2.401 |
| 2019 | 2.475 |
| 2018 | 2.418 |
| 2017 | 2.334 |
| 2016 | 2.261 |
| 2015 | 2.359 |
| 2014 | 2.424 |
| 2013 | 2.428 |
| 2012 | 2.447 |
| 2011 | 2.436 |
| 2010 | 2.445 |
| 2009 | 2.501 |
| 2008 | 2.679 |
| 2007 | 2.545 |
| 2006 | 2.548 |
| 2005 | 2.512 |
| 2004 | 2.436 |
| 2003 | 2.358 |
| 2002 | 2.324 |
| 2001 | 2.373 |
| 2000 | 2.413 |
| 1999 | 2.559 |
| 1998 | 2.63 |
| 1997 | 2.734 |
| 1996 | 2.991 |
| 1995 | 3.172 |
| 1994 | 3.258 |
| 1993 | 3.372 |
| 1992 | 3.479 |
| 1991 | 3.618 |
| 1990 | 3.724 |
| 1989 | 3.983 |
| 1988 | 4.18 |
| 1987 | 4.352 |
| 1986 | 4.409 |
| 1985 | 4.495 |
| 1984 | 4.566 |
| 1983 | 4.626 |
| 1982 | 4.696 |
| 1981 | 4.712 |
| 1980 | 4.78 |
| 1979 | 4.818 |
| 1978 | 4.853 |
| 1977 | 4.942 |
| 1976 | 5.071 |
| 1975 | 5.191 |
| 1974 | 5.298 |
| 1973 | 5.413 |
| 1972 | 5.49 |
| 1971 | 5.569 |
| 1970 | 5.634 |
| 1969 | 5.719 |
| 1968 | 5.782 |
| 1967 | 5.852 |
| 1966 | 5.907 |
| 1965 | 5.967 |
| 1964 | 6.03 |
| 1963 | 6.077 |
| 1962 | 6.11 |
| 1961 | 6.138 |
| 1960 | 6.159 |