| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 3.64531 |
| 2021 | 3.66088 |
| 2020 | 3.66006 |
| 2019 | 3.73869 |
| 2018 | 3.97976 |
| 2017 | 3.98172 |
| 2016 | 3.77805 |
| 2015 | 3.71418 |
| 2014 | 3.31619 |
| 2013 | 2.81741 |
| 2012 | 2.54534 |
| 2011 | 2.35047 |
| 2010 | 2.66523 |
| 2009 | 2.94081 |
| 2008 | 2.92491 |
| 2007 | 2.95136 |
| 2006 | 2.80869 |
| 2005 | 2.59137 |
| 2004 | 2.4161 |
| 2003 | 2.38157 |
| 2002 | 2.44854 |
| 2001 | 2.59888 |
| 2000 | 2.72287 |
| 1999 | 2.54891 |
| 1998 | 2.48696 |
| 1997 | 2.61513 |
| 1996 | 2.586 |
| 1995 | 2.71708 |
| 1994 | 2.57065 |
| 1993 | 4.98333 |
| 1992 | 5.65518 |
| 1991 | 5.91501 |
| 1990 | 6.06522 |
| 1989 | 5.6338 |
| 1988 | 5.52673 |
| 1987 | 6.19886 |
| 1986 | 6.4304 |
| 1985 | 6.42943 |
| 1984 | 6.96162 |
| 1983 | 5.82864 |
| 1982 | 5.1133 |
| 1981 | 5.32113 |
| 1980 | 5.33492 |
| 1979 | 5.31027 |
| 1978 | 5.30567 |
| 1977 | 5.22991 |
| 1976 | 5.17559 |
| 1975 | 5.18987 |
| 1974 | 4.83886 |
| 1973 | 6.68995 |
| 1972 | 7.37552 |
| 1971 | 7.29838 |
| 1970 | 7.21603 |
| 1969 | 7.22416 |
| 1968 | 7.2724 |
| 1967 | 7.27316 |
| 1966 | 7.34782 |
| 1965 | 7.51889 |
| 1964 | 7.5056 |
| 1963 | 7.42514 |
| 1962 | 7.42761 |
| 1961 | 7.39358 |
| 1960 | - |