| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 2.15336 |
| 2021 | 1.94737 |
| 2020 | 0.350407 |
| 2019 | 0.554601 |
| 2018 | 0.519093 |
| 2017 | 0.495042 |
| 2016 | -1.02876 |
| 2015 | 2.19025 |
| 2014 | 0.694763 |
| 2013 | 1.07418 |
| 2012 | -1.01379 |
| 2011 | 0.751814 |
| 2010 | -0.903145 |
| 2009 | -0.149976 |
| 2008 | 1.30704 |
| 2007 | 0.819994 |
| 2006 | 1.21854 |
| 2005 | -1.11281 |
| 2004 | 0.940617 |
| 2003 | -0.340871 |
| 2002 | 1.23499 |
| 2001 | 1.28912 |
| 2000 | 4.31421 |
| 1999 | 2.14642 |
| 1998 | 2.29225 |
| 1997 | 2.00762 |
| 1996 | 3.04924 |
| 1995 | 2.10559 |
| 1994 | -8.78535 |
| 1993 | 0.706761 |
| 1992 | 2.6331 |
| 1991 | 6.18428 |
| 1990 | -8.26055 |
| 1989 | -10.0505 |
| 1988 | 8.14288 |
| 1987 | -4.97497 |
| 1986 | -4.45543 |
| 1985 | 8.03952 |
| 1984 | 5.07054 |
| 1983 | -4.43879 |
| 1982 | -14.124 |
| 1981 | 6.13846 |
| 1980 | 2.62965 |
| 1979 | 2.5294 |
| 1978 | 0.163569 |
| 1977 | 9.41937 |
| 1976 | -2.46329 |
| 1975 | -4.2305 |
| 1974 | -1.687 |
| 1973 | 1.55782 |
| 1972 | 1.67381 |
| 1971 | -1.17647 |
| 1970 | -0.547492 |
| 1969 | -1.79253 |
| 1968 | 1.40613 |
| 1967 | 0.432268 |
| 1966 | 8.10252 |
| 1965 | 5.24672 |
| 1964 | 6.99458 |
| 1963 | 6.53579 |
| 1962 | -2.77224 |
| 1961 | 0.107644 |
| 1960 | - |