| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 4.56386 |
| 2021 | 4.514 |
| 2020 | 4.47092 |
| 2019 | 4.44208 |
| 2018 | 4.42927 |
| 2017 | 4.42541 |
| 2016 | 4.42332 |
| 2015 | 4.42115 |
| 2014 | 4.41815 |
| 2013 | 4.41413 |
| 2012 | 4.40691 |
| 2011 | 4.39813 |
| 2010 | 4.39078 |
| 2009 | 4.38344 |
| 2008 | 4.37335 |
| 2007 | 4.35961 |
| 2006 | 4.3414 |
| 2005 | 4.30863 |
| 2004 | 4.26354 |
| 2003 | 4.21609 |
| 2002 | 4.16468 |
| 2001 | 4.11026 |
| 2000 | 4.05974 |
| 1999 | 4.01689 |
| 1998 | 3.9793 |
| 1997 | 3.94787 |
| 1996 | 3.92517 |
| 1995 | 3.91616 |
| 1994 | 3.88961 |
| 1993 | 3.84128 |
| 1992 | 3.84378 |
| 1991 | 3.91108 |
| 1990 | 4.00238 |
| 1989 | 4.14973 |
| 1988 | 4.30271 |
| 1987 | 4.38534 |
| 1986 | 4.42377 |
| 1985 | 4.4322 |
| 1984 | 4.42121 |
| 1983 | 4.39679 |
| 1982 | 4.36754 |
| 1981 | 4.34237 |
| 1980 | 4.32305 |
| 1979 | 4.3084 |
| 1978 | 4.30281 |
| 1977 | 4.30751 |
| 1976 | 4.31428 |
| 1975 | 4.318 |
| 1974 | 4.32112 |
| 1973 | 4.32367 |
| 1972 | 4.32661 |
| 1971 | 4.33669 |
| 1970 | 4.35756 |
| 1969 | 4.3882 |
| 1968 | 4.42783 |
| 1967 | 4.47532 |
| 1966 | 4.52783 |
| 1965 | 4.5835 |
| 1964 | 4.6415 |
| 1963 | 4.70219 |
| 1962 | 4.76307 |
| 1961 | 4.81971 |
| 1960 | 4.86867 |