| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | -0.899603 |
| 2021 | -4.27698 |
| 2020 | -4.66134 |
| 2019 | -0.0989586 |
| 2018 | -1.02653 |
| 2017 | -6.16091 |
| 2016 | -9.16123 |
| 2015 | -0.453004 |
| 2014 | 3.15099 |
| 2013 | 2.00631 |
| 2012 | 5.15061 |
| 2011 | -3.35407 |
| 2010 | 9.74497 |
| 2009 | 0.614501 |
| 2008 | -0.4379 |
| 2007 | -0.167923 |
| 2006 | -2.85312 |
| 2005 | 12.7412 |
| 2004 | 27.8311 |
| 2003 | 10.2558 |
| 2002 | 4.81404 |
| 2001 | 8.00105 |
| 2000 | -4.20702 |
| 1999 | -4.07693 |
| 1998 | 3.3689 |
| 1997 | 2.10013 |
| 1996 | -2.20662 |
| 1995 | -3.11129 |
| 1994 | 7.71935 |
| 1993 | -17.6099 |
| 1992 | 3.53778 |
| 1991 | 4.66682 |
| 1990 | -6.75117 |
| 1989 | 1.41521 |
| 1988 | 11.6452 |
| 1987 | -5.75294 |
| 1986 | -6.90347 |
| 1985 | 20.6396 |
| 1984 | 0.775858 |
| 1983 | 10.0522 |
| 1982 | 0.47895 |
| 1981 | 1.02012 |
| 1980 | -6.16037 |
| 1979 | -23.0373 |
| 1978 | -2.19854 |
| 1977 | 0.413551 |
| 1976 | 1.02801 |
| 1975 | 6.78018 |
| 1974 | 2.66209 |
| 1973 | -10.4532 |
| 1972 | -1.01559 |
| 1971 | -4.21023 |
| 1970 | -0.146821 |
| 1969 | 4.84836 |
| 1968 | -2.29483 |
| 1967 | -1.0667 |
| 1966 | -3.60779 |
| 1965 | -1.29107 |
| 1964 | -4.39087 |
| 1963 | -3.50151 |
| 1962 | 3.33256 |
| 1961 | -0.538781 |
| 1960 | - |