| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 18.6558 |
| 2021 | 7.19999 |
| 2020 | -5.4549 |
| 2019 | 2.85603 |
| 2018 | 5.01466 |
| 2017 | 0.0282519 |
| 2016 | -1.40084 |
| 2015 | -8.48002 |
| 2014 | 0.645785 |
| 2013 | -4.14137 |
| 2012 | 1.09725 |
| 2011 | 8.5804 |
| 2010 | 6.39119 |
| 2009 | -9.55875 |
| 2008 | 8.64882 |
| 2007 | 3.30193 |
| 2006 | 9.98443 |
| 2005 | 28.1119 |
| 2004 | 9.73426 |
| 2003 | 0.0790047 |
| 2002 | 1.90782 |
| 2001 | 13.7977 |
| 2000 | 5.2898 |
| 1999 | -7.57287 |
| 1998 | 6.74941 |
| 1997 | 3.78279 |
| 1996 | 11.4585 |
| 1995 | 8.83313 |
| 1994 | 43.545 |
| 1993 | -1.3146 |
| 1992 | -12.9066 |
| 1991 | 3.0735 |
| 1990 | 8.01233 |
| 1989 | -1.25261 |
| 1988 | 9.36193 |
| 1987 | -3.13308 |
| 1986 | -16.9328 |
| 1985 | -5.11319 |
| 1984 | 24.0664 |
| 1983 | 0.0121269 |
| 1982 | 9.22078 |
| 1981 | 8.05476 |
| 1980 | 8.7349 |
| 1979 | 8.18976 |
| 1978 | 9.89978 |
| 1977 | 8.61802 |
| 1976 | 8.44953 |
| 1975 | 8.2207 |
| 1974 | 3.73569 |
| 1973 | 6.71359 |
| 1972 | 5.55368 |
| 1971 | 8.99175 |
| 1970 | 3.85955 |
| 1969 | 2.06734 |
| 1968 | 2.03147 |
| 1967 | 3.27929 |
| 1966 | 5.98288 |
| 1965 | 5.6657 |
| 1964 | 8.23125 |
| 1963 | 5.64207 |
| 1962 | 1.53458 |
| 1961 | 5.06283 |
| 1960 | - |