| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 109.506 |
| 2021 | 105.154 |
| 2020 | 103.479 |
| 2019 | 100.584 |
| 2018 | 100.986 |
| 2017 | 100.313 |
| 2016 | 100.684 |
| 2015 | 100 |
| 2014 | 99.1557 |
| 2013 | 99.402 |
| 2012 | 98.0322 |
| 2011 | 91.0243 |
| 2010 | 87.7486 |
| 2009 | 86.9824 |
| 2008 | 84.828 |
| 2007 | 79.7 |
| 2006 | 79.3902 |
| 2005 | 77.7617 |
| 2004 | 74.5603 |
| 2003 | 73.9908 |
| 2002 | 71.7927 |
| 2001 | 69.3286 |
| 2000 | 67.989 |
| 1999 | 65.1604 |
| 1998 | 43.9256 |
| 1997 | 41.7419 |
| 1996 | 40.2651 |
| 1995 | 37.6636 |
| 1994 | 32.7226 |
| 1993 | 24.2336 |
| 1992 | 23.6706 |
| 1991 | 22.9756 |
| 1990 | 22.8031 |
| 1989 | 22.3173 |
| 1988 | 21.8316 |
| 1987 | 21.9657 |
| 1986 | 21.32 |
| 1985 | 22.1171 |
| 1984 | 23.2511 |
| 1983 | 22.8056 |
| 1982 | 21.7722 |
| 1981 | 18.7452 |
| 1980 | 17.4424 |
| 1979 | 15.8297 |
| 1978 | 14.008 |
| 1977 | 12.4699 |
| 1976 | 11.8561 |
| 1975 | 10.3969 |
| 1974 | 9.10037 |
| 1973 | 7.91882 |
| 1972 | 7.55449 |
| 1971 | 7.17308 |
| 1970 | 7.06198 |
| 1969 | 6.72268 |
| 1968 | 6.49822 |
| 1967 | 6.29224 |
| 1966 | 6.28338 |
| 1965 | 6.21276 |
| 1964 | 6.0875 |
| 1963 | 6.10972 |
| 1962 | 5.95785 |
| 1961 | 5.74082 |
| 1960 | 5.68164 |