| 年份 | 南非 |
|---|---|
| 2023 | - |
| 2022 | 0.841058 |
| 2021 | 0.99892 |
| 2020 | 1.22318 |
| 2019 | 1.29507 |
| 2018 | 1.22553 |
| 2017 | 0.387278 |
| 2016 | 0.972004 |
| 2015 | 2.07402 |
| 2014 | 1.57629 |
| 2013 | 1.36162 |
| 2012 | 1.32916 |
| 2011 | 1.26341 |
| 2010 | 1.19304 |
| 2009 | 1.1893 |
| 2008 | 1.13308 |
| 2007 | 1.01388 |
| 2006 | 0.963593 |
| 2005 | 0.945094 |
| 2004 | 0.93529 |
| 2003 | 0.924209 |
| 2002 | 0.910101 |
| 2001 | 0.88566 |
| 2000 | 0.962864 |
| 1999 | 1.11155 |
| 1998 | 1.24455 |
| 1997 | 1.38628 |
| 1996 | 1.52408 |
| 1995 | 1.64604 |
| 1994 | 1.73104 |
| 1993 | 1.81455 |
| 1992 | 2.0559 |
| 1991 | 2.5584 |
| 1990 | 3.07839 |
| 1989 | 3.35237 |
| 1988 | 3.46781 |
| 1987 | 3.49768 |
| 1986 | 3.27833 |
| 1985 | 2.96095 |
| 1984 | 2.7945 |
| 1983 | 2.68037 |
| 1982 | 2.57906 |
| 1981 | 2.57657 |
| 1980 | 2.63608 |
| 1979 | 2.66104 |
| 1978 | 2.69716 |
| 1977 | 2.681 |
| 1976 | 2.6881 |
| 1975 | 2.75683 |
| 1974 | 2.80855 |
| 1973 | 2.84541 |
| 1972 | 2.85518 |
| 1971 | 2.92152 |
| 1970 | 3.01386 |
| 1969 | 3.05802 |
| 1968 | 3.08681 |
| 1967 | 3.0893 |
| 1966 | 3.09221 |
| 1965 | 3.0915 |
| 1964 | 3.06138 |
| 1963 | 3.03344 |
| 1962 | 2.97865 |
| 1961 | 2.79949 |
| 1960 | - |