| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 2.63061 |
| 2021 | 2.70105 |
| 2020 | 2.75678 |
| 2019 | 2.89359 |
| 2018 | 3.19149 |
| 2017 | 3.25462 |
| 2016 | 3.11055 |
| 2015 | 3.10751 |
| 2014 | 2.77449 |
| 2013 | 2.33575 |
| 2012 | 2.12763 |
| 2011 | 1.99448 |
| 2010 | 2.37468 |
| 2009 | 2.71627 |
| 2008 | 2.76378 |
| 2007 | 2.78996 |
| 2006 | 2.64704 |
| 2005 | 2.42945 |
| 2004 | 2.25393 |
| 2003 | 2.21913 |
| 2002 | 2.28584 |
| 2001 | 2.43591 |
| 2000 | 2.55964 |
| 1999 | 2.3885 |
| 1998 | 2.32319 |
| 1997 | 2.4511 |
| 1996 | 2.42481 |
| 1995 | 2.55251 |
| 1994 | 2.40893 |
| 1993 | 1.74407 |
| 1992 | 1.50972 |
| 1991 | 1.70566 |
| 1990 | 1.78039 |
| 1989 | 1.28675 |
| 1988 | 1.09767 |
| 1987 | 1.7104 |
| 1986 | 1.87931 |
| 1985 | 1.81666 |
| 1984 | 2.27896 |
| 1983 | 3.28473 |
| 1982 | 4.07731 |
| 1981 | 4.28936 |
| 1980 | 4.29239 |
| 1979 | 4.26697 |
| 1978 | 4.26173 |
| 1977 | 4.18539 |
| 1976 | 4.12534 |
| 1975 | 4.13376 |
| 1974 | 3.78771 |
| 1973 | 3.3626 |
| 1972 | 3.2738 |
| 1971 | 3.16657 |
| 1970 | 3.04505 |
| 1969 | 3.02958 |
| 1968 | 3.03848 |
| 1967 | 3.00977 |
| 1966 | 3.05915 |
| 1965 | 3.20206 |
| 1964 | 3.1491 |
| 1963 | 3.04932 |
| 1962 | 3.02969 |
| 1961 | 2.97027 |
| 1960 | - |