| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 5.01486 |
| 2021 | -0.370967 |
| 2020 | 1.11814 |
| 2019 | 5.99131 |
| 2018 | 5.59753 |
| 2017 | 1.3 |
| 2016 | -3.90111 |
| 2015 | 29.2 |
| 2014 | 5.6 |
| 2013 | -13.7 |
| 2012 | 2.65108 |
| 2011 | 7.42571 |
| 2010 | 21.6389 |
| 2009 | -13.6615 |
| 2008 | -1.15679 |
| 2007 | - |
| 2006 | - |
| 2005 | - |
| 2004 | - |
| 2003 | 122.691 |
| 2002 | -6.12526 |
| 2001 | -3.04647 |
| 2000 | -8.6068 |
| 1999 | -1.61473 |
| 1998 | 6.65046 |
| 1997 | 11.6777 |
| 1996 | -18.227 |
| 1995 | 37.8414 |
| 1994 | -9.11159 |
| 1993 | 6.88839 |
| 1992 | -3.82749 |
| 1991 | -3.54531 |
| 1990 | -12.3981 |
| 1989 | 5.29054 |
| 1988 | 12.4567 |
| 1987 | 12.2964 |
| 1986 | 8.31268 |
| 1985 | -19.818 |
| 1984 | 12.0017 |
| 1983 | 143.893 |
| 1982 | -46.0245 |
| 1981 | -9.83303 |
| 1980 | -9.81248 |
| 1979 | -6.01299 |
| 1978 | -3.86201 |
| 1977 | 0.00229467 |
| 1976 | 29.7297 |
| 1975 | 13.8485 |
| 1974 | -26.5551 |
| 1973 | 2.90685 |
| 1972 | -14 |
| 1971 | 6.38298 |
| 1970 | 24.5035 |
| 1969 | -6.79029 |
| 1968 | 1.887 |
| 1967 | 8.90392 |
| 1966 | 5.03618 |
| 1965 | 2.96258 |
| 1964 | 9.75655 |
| 1963 | -7.51882 |
| 1962 | 9.91736 |
| 1961 | 1.68071 |
| 1960 | - |