| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 10.9018 |
| 2021 | 10.8121 |
| 2020 | 10.7346 |
| 2019 | 10.6797 |
| 2018 | 10.6723 |
| 2017 | 10.6893 |
| 2016 | 10.703 |
| 2015 | 10.6906 |
| 2014 | 10.6497 |
| 2013 | 10.6341 |
| 2012 | 10.6441 |
| 2011 | 10.6045 |
| 2010 | 10.5687 |
| 2009 | 10.5849 |
| 2008 | 10.5446 |
| 2007 | 10.442 |
| 2006 | 10.3536 |
| 2005 | 10.2751 |
| 2004 | 10.2206 |
| 2003 | 10.1904 |
| 2002 | 10.0976 |
| 2001 | 9.98118 |
| 2000 | 9.96192 |
| 1999 | 9.96603 |
| 1998 | 9.95029 |
| 1997 | 10.0734 |
| 1996 | 10.34 |
| 1995 | 10.5404 |
| 1994 | 10.6492 |
| 1993 | 10.7935 |
| 1992 | 10.9599 |
| 1991 | 11.0472 |
| 1990 | 11.0457 |
| 1989 | 11.0142 |
| 1988 | 10.9383 |
| 1987 | 10.8123 |
| 1986 | 10.6849 |
| 1985 | 10.5859 |
| 1984 | 10.5472 |
| 1983 | 10.5661 |
| 1982 | 10.5157 |
| 1981 | 10.3711 |
| 1980 | 10.2809 |
| 1979 | 10.2555 |
| 1978 | 10.2307 |
| 1977 | 10.2171 |
| 1976 | 10.215 |
| 1975 | 10.2218 |
| 1974 | 10.2318 |
| 1973 | 10.2423 |
| 1972 | 10.2525 |
| 1971 | 10.2505 |
| 1970 | 10.238 |
| 1969 | 10.0852 |
| 1968 | 9.85195 |
| 1967 | 9.68774 |
| 1966 | 9.53838 |
| 1965 | 9.40177 |
| 1964 | 9.42519 |
| 1963 | 9.53329 |
| 1962 | 9.55666 |
| 1961 | 9.56102 |
| 1960 | 9.55068 |