| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 4.95121 |
| 2021 | 4.8 |
| 2020 | 3.23 |
| 2019 | 3.5 |
| 2018 | 3.5 |
| 2017 | 3.5 |
| 2016 | 1.9342 |
| 2015 | 5.25109 |
| 2014 | 3.68486 |
| 2013 | 4.04817 |
| 2012 | 1.91413 |
| 2011 | 3.74556 |
| 2010 | 2.04838 |
| 2009 | 2.83264 |
| 2008 | 4.33776 |
| 2007 | 3.76122 |
| 2006 | 4.36352 |
| 2005 | 2.07963 |
| 2004 | 4.04224 |
| 2003 | 2.70886 |
| 2002 | 4.31949 |
| 2001 | 4.3868 |
| 2000 | 7.5324 |
| 1999 | 5.31755 |
| 1998 | 5.44985 |
| 1997 | 5.01934 |
| 1996 | 5.7309 |
| 1995 | 4.22784 |
| 1994 | -5.31315 |
| 1993 | 5.29029 |
| 1992 | 5.82728 |
| 1991 | 9.48615 |
| 1990 | -5.42825 |
| 1989 | -7.29413 |
| 1988 | 11.4373 |
| 1987 | -2.10619 |
| 1986 | -1.60545 |
| 1985 | 11.2226 |
| 1984 | 8.13193 |
| 1983 | -1.6778 |
| 1982 | -11.666 |
| 1981 | 9.11808 |
| 1980 | 5.42184 |
| 1979 | 5.22073 |
| 1978 | 2.71883 |
| 1977 | 12.1427 |
| 1976 | -0.106898 |
| 1975 | -1.98435 |
| 1974 | 0.564035 |
| 1973 | 3.84135 |
| 1972 | 3.91336 |
| 1971 | 0.946077 |
| 1970 | 1.54412 |
| 1969 | 0.236731 |
| 1968 | 3.4558 |
| 1967 | 2.41657 |
| 1966 | 10.1888 |
| 1965 | 7.21495 |
| 1964 | 8.92257 |
| 1963 | 8.3754 |
| 1962 | -1.16833 |
| 1961 | 1.65898 |
| 1960 | - |