| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 30.0755 |
| 2020 | - |
| 2019 | 27.0766 |
| 2018 | 26.9627 |
| 2017 | 28.0231 |
| 2016 | 31.713 |
| 2015 | 31.4958 |
| 2014 | 32.3023 |
| 2013 | 34.4686 |
| 2012 | 31.0968 |
| 2011 | 32.5171 |
| 2010 | 32.1973 |
| 2009 | 32.9761 |
| 2008 | 30.1501 |
| 2007 | 25.8545 |
| 2006 | 23.8939 |
| 2005 | 23.6013 |
| 2004 | 23.3596 |
| 2003 | 22.9185 |
| 2002 | 20.6149 |
| 2001 | 19.8349 |
| 2000 | 17.4805 |
| 1999 | 16.605 |
| 1998 | 15.6884 |
| 1997 | 14.2949 |
| 1996 | 13.8642 |
| 1995 | 13.5118 |
| 1994 | 11.9437 |
| 1993 | - |
| 1992 | - |
| 1991 | - |
| 1990 | 10.1861 |
| 1989 | 9.04686 |
| 1988 | - |
| 1987 | 8.78638 |
| 1986 | - |
| 1985 | 9.85124 |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | 3.8178 |
| 1973 | - |
| 1972 | 3.74236 |
| 1971 | 3.50051 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |