| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 2.06542 |
| 2021 | 2.17454 |
| 2020 | 2.26837 |
| 2019 | 2.44274 |
| 2018 | 2.77618 |
| 2017 | 2.87593 |
| 2016 | 2.76657 |
| 2015 | 2.79788 |
| 2014 | 2.5004 |
| 2013 | 2.09391 |
| 2012 | 1.91931 |
| 2011 | 1.81796 |
| 2010 | 2.23131 |
| 2009 | 2.60589 |
| 2008 | 2.6848 |
| 2007 | 2.71105 |
| 2006 | 2.56818 |
| 2005 | 2.35066 |
| 2004 | 2.1752 |
| 2003 | 2.14045 |
| 2002 | 2.20724 |
| 2001 | 2.35736 |
| 2000 | 2.48116 |
| 1999 | 2.31156 |
| 1998 | 2.24483 |
| 1997 | 2.3728 |
| 1996 | 2.34805 |
| 1995 | 2.47433 |
| 1994 | 2.33229 |
| 1993 | 0.24664 |
| 1992 | -0.306856 |
| 1991 | -0.032283 |
| 1990 | 0.113455 |
| 1989 | -0.306769 |
| 1988 | -0.432138 |
| 1987 | 0.249684 |
| 1986 | 0.483731 |
| 1985 | 0.483817 |
| 1984 | 1.0041 |
| 1983 | 2.6232 |
| 1982 | 3.81392 |
| 1981 | 4.03041 |
| 1980 | 4.03411 |
| 1979 | 4.01184 |
| 1978 | 4.00973 |
| 1977 | 3.93649 |
| 1976 | 3.87829 |
| 1975 | 3.88855 |
| 1974 | 3.54679 |
| 1973 | 2.62014 |
| 1972 | 2.399 |
| 1971 | 2.3281 |
| 1970 | 2.2397 |
| 1969 | 2.25895 |
| 1968 | 2.29833 |
| 1967 | 2.30062 |
| 1966 | 2.38039 |
| 1965 | 2.55195 |
| 1964 | 2.52485 |
| 1963 | 2.45274 |
| 1962 | 2.45917 |
| 1961 | 2.42427 |
| 1960 | - |