| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 81.8067 |
| 2021 | 80.3884 |
| 2020 | - |
| 2019 | 76.6207 |
| 2018 | 77.6681 |
| 2017 | 67.3644 |
| 2016 | 75.6263 |
| 2015 | 80.3826 |
| 2014 | 88.9958 |
| 2013 | 88.4222 |
| 2012 | 81.9803 |
| 2011 | 78.0206 |
| 2010 | 71.3176 |
| 2009 | 69.7676 |
| 2008 | 65.6776 |
| 2007 | 58.701 |
| 2006 | 58.7539 |
| 2005 | 58.9194 |
| 2004 | 60.5158 |
| 2003 | 58.0444 |
| 2002 | 55.4872 |
| 2001 | 51.5307 |
| 2000 | 48.3455 |
| 1999 | 45.2792 |
| 1998 | 42.8797 |
| 1997 | 37.548 |
| 1996 | 32.5701 |
| 1995 | 31.0489 |
| 1994 | 32.1379 |
| 1993 | 33.9836 |
| 1992 | 35.9485 |
| 1991 | 33.1806 |
| 1990 | 31.629 |
| 1989 | 27.3741 |
| 1988 | 26.4635 |
| 1987 | 21.478 |
| 1986 | 21.7609 |
| 1985 | 18.3824 |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | 17.6901 |
| 1976 | 17.2666 |
| 1975 | 16.9693 |
| 1974 | 16.3155 |
| 1973 | 16.3635 |
| 1972 | 15.718 |
| 1971 | 16.0603 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |