| 年份 | 苏丹 |
|---|---|
| 2023 | - |
| 2022 | 2.27849 |
| 2021 | 2.30599 |
| 2020 | 2.32467 |
| 2019 | 2.32682 |
| 2018 | 2.31236 |
| 2017 | 2.28543 |
| 2016 | 2.24357 |
| 2015 | 2.18336 |
| 2014 | 2.10401 |
| 2013 | 2.00908 |
| 2012 | 1.90729 |
| 2011 | 1.80174 |
| 2010 | 1.69537 |
| 2009 | 1.59899 |
| 2008 | 1.51033 |
| 2007 | 1.42223 |
| 2006 | 1.34044 |
| 2005 | 1.26923 |
| 2004 | 1.21116 |
| 2003 | 1.16741 |
| 2002 | 1.13776 |
| 2001 | 1.12088 |
| 2000 | 1.11523 |
| 1999 | 1.12059 |
| 1998 | 1.13832 |
| 1997 | 1.16747 |
| 1996 | 1.20777 |
| 1995 | 1.26058 |
| 1994 | 1.32347 |
| 1993 | 1.39753 |
| 1992 | 1.44971 |
| 1991 | 1.46809 |
| 1990 | 1.481 |
| 1989 | 1.49004 |
| 1988 | 1.50019 |
| 1987 | 1.50745 |
| 1986 | 1.50186 |
| 1985 | 1.48795 |
| 1984 | 1.47041 |
| 1983 | 1.45968 |
| 1982 | 1.45741 |
| 1981 | 1.45335 |
| 1980 | 1.44529 |
| 1979 | 1.43175 |
| 1978 | 1.43664 |
| 1977 | 1.46219 |
| 1976 | 1.48411 |
| 1975 | 1.50326 |
| 1974 | 1.52069 |
| 1973 | 1.53675 |
| 1972 | 1.55286 |
| 1971 | 1.56859 |
| 1970 | 1.58207 |
| 1969 | 1.59294 |
| 1968 | 1.59998 |
| 1967 | 1.60372 |
| 1966 | 1.60639 |
| 1965 | 1.60915 |
| 1964 | 1.61141 |
| 1963 | 1.61275 |
| 1962 | 1.61563 |
| 1961 | 1.62348 |
| 1960 | 1.63838 |