| 年份 | 贝宁  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 0.479758 | 
| 2021 | 0.482975 | 
| 2020 | 0.485572 | 
| 2019 | 0.484921 | 
| 2018 | 0.48346 | 
| 2017 | 0.483467 | 
| 2016 | 0.484441 | 
| 2015 | 0.485988 | 
| 2014 | 0.488091 | 
| 2013 | 0.490702 | 
| 2012 | 0.493913 | 
| 2011 | 0.497993 | 
| 2010 | 0.502665 | 
| 2009 | 0.508357 | 
| 2008 | 0.515084 | 
| 2007 | 0.522852 | 
| 2006 | 0.531832 | 
| 2005 | 0.540667 | 
| 2004 | 0.549555 | 
| 2003 | 0.558738 | 
| 2002 | 0.567435 | 
| 2001 | 0.575252 | 
| 2000 | 0.58157 | 
| 1999 | 0.586723 | 
| 1998 | 0.591139 | 
| 1997 | 0.595372 | 
| 1996 | 0.600187 | 
| 1995 | 0.606153 | 
| 1994 | 0.614383 | 
| 1993 | 0.620713 | 
| 1992 | 0.624051 | 
| 1991 | 0.627715 | 
| 1990 | 0.63067 | 
| 1989 | 0.633012 | 
| 1988 | 0.634619 | 
| 1987 | 0.635268 | 
| 1986 | 0.635866 | 
| 1985 | 0.636962 | 
| 1984 | 0.638552 | 
| 1983 | 0.640582 | 
| 1982 | 0.64307 | 
| 1981 | 0.645279 | 
| 1980 | 0.64564 | 
| 1979 | 0.643669 | 
| 1978 | 0.639266 | 
| 1977 | 0.63389 | 
| 1976 | 0.629858 | 
| 1975 | 0.628083 | 
| 1974 | 0.628683 | 
| 1973 | 0.631259 | 
| 1972 | 0.635756 | 
| 1971 | 0.642099 | 
| 1970 | 0.650264 | 
| 1969 | 0.66029 | 
| 1968 | 0.671694 | 
| 1967 | 0.685332 | 
| 1966 | 0.702555 | 
| 1965 | 0.724037 | 
| 1964 | 0.750502 | 
| 1963 | 0.781818 | 
| 1962 | 0.818065 | 
| 1961 | 0.859049 | 
| 1960 | 0.903175 |