| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.457 |
| 2020 | 4.542 |
| 2019 | 4.617 |
| 2018 | 4.681 |
| 2017 | 4.761 |
| 2016 | 4.829 |
| 2015 | 4.898 |
| 2014 | 4.912 |
| 2013 | 4.903 |
| 2012 | 4.895 |
| 2011 | 4.96 |
| 2010 | 5.017 |
| 2009 | 5.05 |
| 2008 | 5.074 |
| 2007 | 5.065 |
| 2006 | 5.044 |
| 2005 | 5.039 |
| 2004 | 5.094 |
| 2003 | 5.172 |
| 2002 | 5.248 |
| 2001 | 5.327 |
| 2000 | 5.38 |
| 1999 | 5.447 |
| 1998 | 5.504 |
| 1997 | 5.596 |
| 1996 | 5.707 |
| 1995 | 5.788 |
| 1994 | 5.874 |
| 1993 | 5.961 |
| 1992 | 6.053 |
| 1991 | 6.116 |
| 1990 | 6.168 |
| 1989 | 6.231 |
| 1988 | 6.282 |
| 1987 | 6.355 |
| 1986 | 6.425 |
| 1985 | 6.487 |
| 1984 | 6.547 |
| 1983 | 6.597 |
| 1982 | 6.64 |
| 1981 | 6.679 |
| 1980 | 6.728 |
| 1979 | 6.779 |
| 1978 | 6.837 |
| 1977 | 6.871 |
| 1976 | 6.903 |
| 1975 | 6.933 |
| 1974 | 6.954 |
| 1973 | 6.96 |
| 1972 | 7.012 |
| 1971 | 7.059 |
| 1970 | 7.027 |
| 1969 | 7.002 |
| 1968 | 6.971 |
| 1967 | 6.941 |
| 1966 | 6.902 |
| 1965 | 6.849 |
| 1964 | 6.803 |
| 1963 | 6.75 |
| 1962 | 6.692 |
| 1961 | 6.628 |
| 1960 | 6.647 |