| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 24.8315 |
| 2020 | 24.8315 |
| 2019 | 24.8315 |
| 2018 | 24.8315 |
| 2017 | 24.8315 |
| 2016 | 24.8315 |
| 2015 | 23.9447 |
| 2014 | 23.9447 |
| 2013 | 23.9447 |
| 2012 | 23.0578 |
| 2011 | 22.171 |
| 2010 | 22.171 |
| 2009 | 22.171 |
| 2008 | 22.171 |
| 2007 | 22.171 |
| 2006 | 22.171 |
| 2005 | 23.5367 |
| 2004 | 23.5012 |
| 2003 | 23.5012 |
| 2002 | 22.6144 |
| 2001 | 21.7276 |
| 2000 | 21.1068 |
| 1999 | 20.3973 |
| 1998 | 19.9539 |
| 1997 | 18.6236 |
| 1996 | 17.2934 |
| 1995 | 15.8744 |
| 1994 | 15.0763 |
| 1993 | 14.6328 |
| 1992 | 14.4555 |
| 1991 | 14.3668 |
| 1990 | 14.3225 |
| 1989 | 14.3668 |
| 1988 | 14.2781 |
| 1987 | 14.1894 |
| 1986 | 14.1007 |
| 1985 | 14.0121 |
| 1984 | 13.9234 |
| 1983 | 13.8347 |
| 1982 | 13.746 |
| 1981 | 13.5686 |
| 1980 | 13.3026 |
| 1979 | 13.0365 |
| 1978 | 12.8592 |
| 1977 | 12.6818 |
| 1976 | 12.4158 |
| 1975 | 12.1497 |
| 1974 | 11.795 |
| 1973 | 11.5289 |
| 1972 | 11.3515 |
| 1971 | 11.0855 |
| 1970 | 10.6421 |
| 1969 | 10.4647 |
| 1968 | 9.75523 |
| 1967 | 9.48918 |
| 1966 | 9.13445 |
| 1965 | 8.86839 |
| 1964 | 8.69102 |
| 1963 | 8.51366 |
| 1962 | 8.33629 |
| 1961 | 8.15892 |
| 1960 | - |