| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 0.557461 |
| 2021 | 0.550884 |
| 2020 | 0.458762 |
| 2019 | 0.473314 |
| 2018 | 0.632858 |
| 2017 | 0.920613 |
| 2016 | 0.673597 |
| 2015 | 0.798485 |
| 2014 | 0.700925 |
| 2013 | 0.68724 |
| 2012 | 0.702056 |
| 2011 | - |
| 2010 | - |
| 2009 | - |
| 2008 | 0.663959 |
| 2007 | - |
| 2006 | 0.665723 |
| 2005 | 0.680971 |
| 2004 | 0.67615 |
| 2003 | 0.647223 |
| 2002 | 0.622819 |
| 2001 | 0.357971 |
| 2000 | 0.412852 |
| 1999 | 0.485389 |
| 1998 | - |
| 1997 | - |
| 1996 | - |
| 1995 | - |
| 1994 | - |
| 1993 | - |
| 1992 | - |
| 1991 | - |
| 1990 | 1.22516 |
| 1989 | 1.3079 |
| 1988 | 1.56409 |
| 1987 | 1.5696 |
| 1986 | 1.3551 |
| 1985 | 1.30493 |
| 1984 | 1.4587 |
| 1983 | 1.18897 |
| 1982 | 1.0493 |
| 1981 | 1.55137 |
| 1980 | 2.03165 |
| 1979 | 1.93046 |
| 1978 | 1.19431 |
| 1977 | 1.67879 |
| 1976 | 1.28165 |
| 1975 | 1.49291 |
| 1974 | 1.44238 |
| 1973 | 1.67753 |
| 1972 | 1.48779 |
| 1971 | 1.60104 |
| 1970 | 1.62528 |
| 1969 | 1.89474 |
| 1968 | 2.07212 |
| 1967 | 1.97625 |
| 1966 | 1.90023 |
| 1965 | 2.10651 |
| 1964 | 2.1817 |
| 1963 | 1.73684 |
| 1962 | 1.75163 |
| 1961 | 1.39529 |
| 1960 | 0.871585 |