| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | 0.597141 |
| 2021 | 0.6182 |
| 2020 | 0.626115 |
| 2019 | 0.614903 |
| 2018 | 0.597446 |
| 2017 | 0.581753 |
| 2016 | 0.563203 |
| 2015 | 0.5543 |
| 2014 | 0.560118 |
| 2013 | 0.568862 |
| 2012 | 0.580132 |
| 2011 | 0.595542 |
| 2010 | 0.609267 |
| 2009 | 0.617396 |
| 2008 | 0.622712 |
| 2007 | 0.62452 |
| 2006 | 0.623289 |
| 2005 | 0.617387 |
| 2004 | 0.607572 |
| 2003 | 0.597115 |
| 2002 | 0.585192 |
| 2001 | 0.570924 |
| 2000 | 0.555373 |
| 1999 | 0.542177 |
| 1998 | 0.532239 |
| 1997 | 0.522949 |
| 1996 | 0.51293 |
| 1995 | 0.503896 |
| 1994 | 0.497311 |
| 1993 | 0.490147 |
| 1992 | 0.481897 |
| 1991 | 0.475729 |
| 1990 | 0.472671 |
| 1989 | 0.471148 |
| 1988 | 0.470012 |
| 1987 | 0.468056 |
| 1986 | 0.464712 |
| 1985 | 0.453623 |
| 1984 | 0.436656 |
| 1983 | 0.420605 |
| 1982 | 0.40511 |
| 1981 | 0.390565 |
| 1980 | 0.37885 |
| 1979 | 0.36995 |
| 1978 | 0.362873 |
| 1977 | 0.358215 |
| 1976 | 0.354823 |
| 1975 | 0.353256 |
| 1974 | 0.354345 |
| 1973 | 0.357712 |
| 1972 | 0.363093 |
| 1971 | 0.369343 |
| 1970 | 0.375221 |
| 1969 | 0.381266 |
| 1968 | 0.388321 |
| 1967 | 0.396069 |
| 1966 | 0.404197 |
| 1965 | 0.41235 |
| 1964 | 0.420553 |
| 1963 | 0.428951 |
| 1962 | 0.437527 |
| 1961 | 0.44633 |
| 1960 | 0.455068 |