| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 3.42068 |
| 2021 | 4.23871 |
| 2020 | 0.951938 |
| 2019 | 3.82451 |
| 2018 | 3.62426 |
| 2017 | 2.60356 |
| 2016 | 0.335852 |
| 2015 | -1.18168 |
| 2014 | 3.2905 |
| 2013 | 4.12761 |
| 2012 | 1.80006 |
| 2011 | -0.00742819 |
| 2010 | -0.839356 |
| 2009 | -0.648437 |
| 2008 | 1.84963 |
| 2007 | 2.98205 |
| 2006 | 0.81141 |
| 2005 | -1.46781 |
| 2004 | 1.31651 |
| 2003 | 0.372025 |
| 2002 | 1.54896 |
| 2001 | 2.20737 |
| 2000 | 2.68965 |
| 1999 | 2.16959 |
| 1998 | 0.848 |
| 1997 | 2.70245 |
| 1996 | 1.6783 |
| 1995 | 3.88594 |
| 1994 | -1.72072 |
| 1993 | 1.22888 |
| 1992 | -0.14986 |
| 1991 | 1.08257 |
| 1990 | 5.71245 |
| 1989 | -5.7425 |
| 1988 | 0.348282 |
| 1987 | -4.38655 |
| 1986 | -0.788228 |
| 1985 | 4.45294 |
| 1984 | 4.87417 |
| 1983 | -7.03384 |
| 1982 | -0.609693 |
| 1981 | 6.95178 |
| 1980 | 3.95356 |
| 1979 | 3.81078 |
| 1978 | -1.26377 |
| 1977 | 2.43415 |
| 1976 | -1.49541 |
| 1975 | -7.07478 |
| 1974 | 1.02616 |
| 1973 | 1.42561 |
| 1972 | 4.13266 |
| 1971 | -3.56802 |
| 1970 | -0.00525612 |
| 1969 | 0.794771 |
| 1968 | 1.78501 |
| 1967 | -0.87998 |
| 1966 | 1.6148 |
| 1965 | 3.3609 |
| 1964 | 4.76298 |
| 1963 | 2.95229 |
| 1962 | -4.99368 |
| 1961 | 1.56733 |
| 1960 | - |