| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 3.44849 |
| 2021 | 3.33645 |
| 2020 | 3.24027 |
| 2019 | 3.15749 |
| 2018 | 3.0833 |
| 2017 | 3.01325 |
| 2016 | 2.95344 |
| 2015 | 2.91173 |
| 2014 | 2.8913 |
| 2013 | 2.89326 |
| 2012 | 2.91456 |
| 2011 | 2.95039 |
| 2010 | 3.00387 |
| 2009 | 3.0694 |
| 2008 | 3.14507 |
| 2007 | 3.231 |
| 2006 | 3.32381 |
| 2005 | 3.41786 |
| 2004 | 3.50482 |
| 2003 | 3.57926 |
| 2002 | 3.63577 |
| 2001 | 3.67062 |
| 2000 | 3.68014 |
| 1999 | 3.65847 |
| 1998 | 3.61511 |
| 1997 | 3.56 |
| 1996 | 3.4881 |
| 1995 | 3.40013 |
| 1994 | 3.30403 |
| 1993 | 3.20114 |
| 1992 | 3.11925 |
| 1991 | 3.06731 |
| 1990 | 3.01938 |
| 1989 | 2.98088 |
| 1988 | 2.96329 |
| 1987 | 2.96289 |
| 1986 | 2.96908 |
| 1985 | 2.97907 |
| 1984 | 2.99186 |
| 1983 | 2.97184 |
| 1982 | 2.93651 |
| 1981 | 2.93511 |
| 1980 | 2.95344 |
| 1979 | 2.98127 |
| 1978 | 3.01575 |
| 1977 | 3.05793 |
| 1976 | 3.10557 |
| 1975 | 3.15952 |
| 1974 | 3.22173 |
| 1973 | 3.2702 |
| 1972 | 3.30231 |
| 1971 | 3.33573 |
| 1970 | 3.36762 |
| 1969 | 3.39702 |
| 1968 | 3.38242 |
| 1967 | 3.32128 |
| 1966 | 3.25642 |
| 1965 | 3.18835 |
| 1964 | 3.11587 |
| 1963 | 3.09103 |
| 1962 | 3.11636 |
| 1961 | 3.13771 |
| 1960 | 3.15509 |