| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 2.30442 |
| 2020 | 2.38287 |
| 2019 | 2.37011 |
| 2018 | 2.4918 |
| 2017 | 4.01086 |
| 2016 | 4.40225 |
| 2015 | 4.24693 |
| 2014 | 3.70302 |
| 2013 | 3.55909 |
| 2012 | 3.91817 |
| 2011 | 3.47508 |
| 2010 | 3.41973 |
| 2009 | 3.70094 |
| 2008 | 3.64709 |
| 2007 | 3.62547 |
| 2006 | 3.0469 |
| 2005 | 3.07175 |
| 2004 | 3.12502 |
| 2003 | 4.13976 |
| 2002 | 3.30157 |
| 2001 | 3.08395 |
| 2000 | 3.26095 |
| 1999 | 3.14742 |
| 1998 | 7.39174 |
| 1997 | 7.70839 |
| 1996 | 7.90673 |
| 1995 | 8.66019 |
| 1994 | 7.99526 |
| 1993 | 4.74742 |
| 1992 | 7.57111 |
| 1991 | 6.34469 |
| 1990 | 6.38683 |
| 1989 | 6.6978 |
| 1988 | 5.99709 |
| 1987 | 5.66251 |
| 1986 | 6.7346 |
| 1985 | 5.35225 |
| 1984 | 7.25721 |
| 1983 | 7.68472 |
| 1982 | 9.97304 |
| 1981 | 6.95595 |
| 1980 | 7.31176 |
| 1979 | 7.16735 |
| 1978 | 9.87506 |
| 1977 | 11.9754 |
| 1976 | 7.17067 |
| 1975 | 8.24812 |
| 1974 | 7.30053 |
| 1973 | 7.26544 |
| 1972 | 5.34084 |
| 1971 | 5.79302 |
| 1970 | 6.70734 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |