| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | 0.703929 |
| 2021 | 0.710077 |
| 2020 | 0.710329 |
| 2019 | 0.69897 |
| 2018 | 0.682221 |
| 2017 | 0.663458 |
| 2016 | 0.634432 |
| 2015 | 0.606577 |
| 2014 | 0.58516 |
| 2013 | 0.56118 |
| 2012 | 0.539361 |
| 2011 | 0.524793 |
| 2010 | 0.519446 |
| 2009 | 0.523083 |
| 2008 | 0.533355 |
| 2007 | 0.546758 |
| 2006 | 0.561401 |
| 2005 | 0.575032 |
| 2004 | 0.58698 |
| 2003 | 0.598274 |
| 2002 | 0.607521 |
| 2001 | 0.612942 |
| 2000 | 0.613655 |
| 1999 | 0.611878 |
| 1998 | 0.609566 |
| 1997 | 0.606084 |
| 1996 | 0.600759 |
| 1995 | 0.59559 |
| 1994 | 0.592451 |
| 1993 | 0.588539 |
| 1992 | 0.58364 |
| 1991 | 0.5815 |
| 1990 | 0.583547 |
| 1989 | 0.588247 |
| 1988 | 0.594312 |
| 1987 | 0.600561 |
| 1986 | 0.606254 |
| 1985 | 0.602727 |
| 1984 | 0.591658 |
| 1983 | 0.581565 |
| 1982 | 0.571423 |
| 1981 | 0.561152 |
| 1980 | 0.553398 |
| 1979 | 0.54766 |
| 1978 | 0.539598 |
| 1977 | 0.529222 |
| 1976 | 0.516113 |
| 1975 | 0.500853 |
| 1974 | 0.485305 |
| 1973 | 0.471482 |
| 1972 | 0.460942 |
| 1971 | 0.453559 |
| 1970 | 0.449391 |
| 1969 | 0.448699 |
| 1968 | 0.451803 |
| 1967 | 0.457829 |
| 1966 | 0.465229 |
| 1965 | 0.473108 |
| 1964 | 0.481867 |
| 1963 | 0.491942 |
| 1962 | 0.502892 |
| 1961 | 0.514198 |
| 1960 | 0.524836 |