| 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 |