| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 51.1887 |
| 2021 | 38.7501 |
| 2020 | 26.7161 |
| 2019 | 36.7423 |
| 2018 | 36.1907 |
| 2017 | 33.873 |
| 2016 | 26.295 |
| 2015 | 30.0018 |
| 2014 | 34.1614 |
| 2013 | 33.5656 |
| 2012 | 38.4681 |
| 2011 | 38.8773 |
| 2010 | 36.8456 |
| 2009 | 35.1384 |
| 2008 | 42.6945 |
| 2007 | 44.5035 |
| 2006 | 47.5844 |
| 2005 | 47.9773 |
| 2004 | 51.0089 |
| 2003 | 24.633 |
| 2002 | 12.6899 |
| 2001 | 14.6658 |
| 2000 | 16.8901 |
| 1999 | 18.3181 |
| 1998 | 18.4916 |
| 1997 | 18.5438 |
| 1996 | 17.5435 |
| 1995 | 21.929 |
| 1994 | 16.1056 |
| 1993 | 13.3234 |
| 1992 | 11.0907 |
| 1991 | 11.9516 |
| 1990 | 13.4802 |
| 1989 | 13.7814 |
| 1988 | 15.0191 |
| 1987 | 15.4492 |
| 1986 | 13.3941 |
| 1985 | 11.9066 |
| 1984 | 18.0178 |
| 1983 | 16.4189 |
| 1982 | 6.56197 |
| 1981 | 15.1005 |
| 1980 | 16.9449 |
| 1979 | 17.7786 |
| 1978 | 16.4227 |
| 1977 | 15.354 |
| 1976 | 16.0839 |
| 1975 | 14.4027 |
| 1974 | 18.3911 |
| 1973 | 15.7288 |
| 1972 | 14.5651 |
| 1971 | 15.9124 |
| 1970 | 16.2598 |
| 1969 | 13.2068 |
| 1968 | 14.941 |
| 1967 | 14.3619 |
| 1966 | 13.9126 |
| 1965 | 13.5003 |
| 1964 | 13.7276 |
| 1963 | 12.9483 |
| 1962 | 14.0304 |
| 1961 | 13.911 |
| 1960 | 13.3896 |