| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 49.8062 |
| 2021 | 49.8041 |
| 2020 | 49.8036 |
| 2019 | 49.8054 |
| 2018 | 49.8091 |
| 2017 | 49.8158 |
| 2016 | 49.8266 |
| 2015 | 49.8375 |
| 2014 | 49.8466 |
| 2013 | 49.8582 |
| 2012 | 49.8726 |
| 2011 | 49.8897 |
| 2010 | 49.9093 |
| 2009 | 49.9319 |
| 2008 | 49.9555 |
| 2007 | 49.9794 |
| 2006 | 50.0049 |
| 2005 | 50.0347 |
| 2004 | 50.0675 |
| 2003 | 50.1033 |
| 2002 | 50.1424 |
| 2001 | 50.1811 |
| 2000 | 50.2177 |
| 1999 | 50.2555 |
| 1998 | 50.2966 |
| 1997 | 50.3388 |
| 1996 | 50.3827 |
| 1995 | 50.4334 |
| 1994 | 50.487 |
| 1993 | 50.5296 |
| 1992 | 50.568 |
| 1991 | 50.6126 |
| 1990 | 50.629 |
| 1989 | 50.6325 |
| 1988 | 50.6606 |
| 1987 | 50.6481 |
| 1986 | 50.6248 |
| 1985 | 50.6354 |
| 1984 | 50.6276 |
| 1983 | 50.6123 |
| 1982 | 50.6247 |
| 1981 | 50.6408 |
| 1980 | 50.6272 |
| 1979 | 50.6164 |
| 1978 | 50.6184 |
| 1977 | 50.6177 |
| 1976 | 50.6156 |
| 1975 | 50.6216 |
| 1974 | 50.636 |
| 1973 | 50.6486 |
| 1972 | 50.6518 |
| 1971 | 50.6468 |
| 1970 | 50.641 |
| 1969 | 50.6338 |
| 1968 | 50.6268 |
| 1967 | 50.6171 |
| 1966 | 50.6038 |
| 1965 | 50.5995 |
| 1964 | 50.6053 |
| 1963 | 50.6117 |
| 1962 | 50.6198 |
| 1961 | 50.6273 |
| 1960 | 50.6311 |