| 年份 | 乍得 |
|---|---|
| 2023 | - |
| 2022 | 4.99万 |
| 2021 | 4.84万 |
| 2020 | - |
| 2019 | 4.47万 |
| 2018 | 4.38万 |
| 2017 | 3.96万 |
| 2016 | 3.89万 |
| 2015 | 4.09万 |
| 2014 | 4.35万 |
| 2013 | 3.73万 |
| 2012 | 3.41万 |
| 2011 | 3.08万 |
| 2010 | 2.78万 |
| 2009 | 2.74万 |
| 2008 | 2.45万 |
| 2007 | 2.19万 |
| 2006 | 2.07万 |
| 2005 | 2万 |
| 2004 | 1.85万 |
| 2003 | 1.61万 |
| 2002 | 1.6万 |
| 2001 | 1.38万 |
| 2000 | 1.33万 |
| 1999 | 1.24万 |
| 1998 | 1.16万 |
| 1997 | 1.02万 |
| 1996 | 9395 |
| 1995 | 8826 |
| 1994 | 8905 |
| 1993 | - |
| 1992 | 9126 |
| 1991 | 7980 |
| 1990 | 7327 |
| 1989 | 6215 |
| 1988 | - |
| 1987 | - |
| 1986 | 4779 |
| 1985 | 4494 |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | 2788 |
| 1971 | 2824 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |