| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | 10.8025 |
| 2019 | 10.7973 |
| 2018 | 12.0071 |
| 2017 | 11.7388 |
| 2016 | 12.3617 |
| 2015 | 12.9074 |
| 2014 | 15.1966 |
| 2013 | 15.3102 |
| 2012 | 13.3534 |
| 2011 | 12.2822 |
| 2010 | 13.1352 |
| 2009 | 9.74951 |
| 2008 | 7.66395 |
| 2007 | 7.75899 |
| 2006 | 6.47644 |
| 2005 | 5.65153 |
| 2004 | 5.71907 |
| 2003 | 5.66463 |
| 2002 | 5.13199 |
| 2001 | 4.36625 |
| 2000 | 3.62698 |
| 1999 | 3.20746 |
| 1998 | - |
| 1997 | 2.5136 |
| 1996 | 2.05464 |
| 1995 | 2.03436 |
| 1994 | 1.95362 |
| 1993 | 2.00092 |
| 1992 | 2.19626 |
| 1991 | 2.32081 |
| 1990 | 2.02301 |
| 1989 | 2.20923 |
| 1988 | 2.06946 |
| 1987 | 2.12834 |
| 1986 | 2.24176 |
| 1985 | 1.86592 |
| 1984 | 1.80426 |
| 1983 | 1.74844 |
| 1982 | 1.6188 |
| 1981 | 1.36495 |
| 1980 | 0.99608 |
| 1979 | 0.91904 |
| 1978 | 1.03939 |
| 1977 | 0.94425 |
| 1976 | 0.71348 |
| 1975 | 0.65945 |
| 1974 | 0.6819 |
| 1973 | 0.42469 |
| 1972 | 0.23499 |
| 1971 | 0.12843 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |