| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 2.5131 |
| 2021 | 2.46096 |
| 2020 | 2.42263 |
| 2019 | 2.40203 |
| 2018 | 2.39749 |
| 2017 | 2.40611 |
| 2016 | 2.42676 |
| 2015 | 2.46274 |
| 2014 | 2.51373 |
| 2013 | 2.5775 |
| 2012 | 2.65061 |
| 2011 | 2.7303 |
| 2010 | 2.81111 |
| 2009 | 2.88469 |
| 2008 | 2.94674 |
| 2007 | 2.99319 |
| 2006 | 3.02047 |
| 2005 | 3.02622 |
| 2004 | 3.00609 |
| 2003 | 2.96472 |
| 2002 | 2.91178 |
| 2001 | 2.846 |
| 2000 | 2.7664 |
| 1999 | 2.6811 |
| 1998 | 2.59131 |
| 1997 | 2.48916 |
| 1996 | 2.38099 |
| 1995 | 2.27741 |
| 1994 | 2.18242 |
| 1993 | 2.10356 |
| 1992 | 2.06996 |
| 1991 | 2.07373 |
| 1990 | 2.08188 |
| 1989 | 2.09468 |
| 1988 | 2.11911 |
| 1987 | 2.15068 |
| 1986 | 2.18256 |
| 1985 | 2.2161 |
| 1984 | 2.25012 |
| 1983 | 2.25749 |
| 1982 | 2.25615 |
| 1981 | 2.28459 |
| 1980 | 2.32885 |
| 1979 | 2.37964 |
| 1978 | 2.43496 |
| 1977 | 2.49376 |
| 1976 | 2.55051 |
| 1975 | 2.60414 |
| 1974 | 2.65669 |
| 1973 | 2.65856 |
| 1972 | 2.60829 |
| 1971 | 2.55743 |
| 1970 | 2.50561 |
| 1969 | 2.45122 |
| 1968 | 2.43462 |
| 1967 | 2.4589 |
| 1966 | 2.48235 |
| 1965 | 2.50278 |
| 1964 | 2.52054 |
| 1963 | 2.53637 |
| 1962 | 2.54828 |
| 1961 | 2.55563 |
| 1960 | 2.5604 |