| 年份 | 贝宁 |
|---|---|
| 2023 | - |
| 2022 | 9.00943 |
| 2021 | 9.03103 |
| 2020 | 9.07041 |
| 2019 | 9.14338 |
| 2018 | 9.20764 |
| 2017 | 9.23272 |
| 2016 | 9.24979 |
| 2015 | 9.25088 |
| 2014 | 9.20196 |
| 2013 | 9.15793 |
| 2012 | 9.15697 |
| 2011 | 9.14885 |
| 2010 | 9.13347 |
| 2009 | 9.12083 |
| 2008 | 9.1044 |
| 2007 | 9.08501 |
| 2006 | 9.07959 |
| 2005 | 9.05496 |
| 2004 | 8.99646 |
| 2003 | 8.9249 |
| 2002 | 8.84077 |
| 2001 | 8.75413 |
| 2000 | 8.67924 |
| 1999 | 8.63321 |
| 1998 | 8.62189 |
| 1997 | 8.63413 |
| 1996 | 8.66993 |
| 1995 | 8.75228 |
| 1994 | 8.90947 |
| 1993 | 8.89106 |
| 1992 | 8.76817 |
| 1991 | 8.78278 |
| 1990 | 8.80418 |
| 1989 | 8.82515 |
| 1988 | 8.84083 |
| 1987 | 8.84873 |
| 1986 | 8.84153 |
| 1985 | 8.809 |
| 1984 | 8.75416 |
| 1983 | 8.68837 |
| 1982 | 8.61666 |
| 1981 | 8.54185 |
| 1980 | 8.47467 |
| 1979 | 8.41844 |
| 1978 | 8.36594 |
| 1977 | 8.32108 |
| 1976 | 8.28794 |
| 1975 | 8.26971 |
| 1974 | 8.09033 |
| 1973 | 7.81919 |
| 1972 | 7.67247 |
| 1971 | 7.59412 |
| 1970 | 7.55445 |
| 1969 | 7.73295 |
| 1968 | 8.02941 |
| 1967 | 8.17884 |
| 1966 | 8.23583 |
| 1965 | 8.2281 |
| 1964 | 8.18418 |
| 1963 | 8.11524 |
| 1962 | 8.03158 |
| 1961 | 7.95233 |
| 1960 | 7.87972 |