| 年份 | 贝宁  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 5.54316 | 
| 2021 | 5.52804 | 
| 2020 | 5.5083 | 
| 2019 | 5.47775 | 
| 2018 | 5.43582 | 
| 2017 | 5.38844 | 
| 2016 | 5.34071 | 
| 2015 | 5.29877 | 
| 2014 | 5.27099 | 
| 2013 | 5.26001 | 
| 2012 | 5.25711 | 
| 2011 | 5.25341 | 
| 2010 | 5.24844 | 
| 2009 | 5.24278 | 
| 2008 | 5.23685 | 
| 2007 | 5.22988 | 
| 2006 | 5.22711 | 
| 2005 | 5.21877 | 
| 2004 | 5.20617 | 
| 2003 | 5.19766 | 
| 2002 | 5.18256 | 
| 2001 | 5.15797 | 
| 2000 | 5.11873 | 
| 1999 | 5.06718 | 
| 1998 | 5.01038 | 
| 1997 | 4.95191 | 
| 1996 | 4.89704 | 
| 1995 | 4.86054 | 
| 1994 | 4.85455 | 
| 1993 | 4.78757 | 
| 1992 | 4.69662 | 
| 1991 | 4.67043 | 
| 1990 | 4.65392 | 
| 1989 | 4.60363 | 
| 1988 | 4.56295 | 
| 1987 | 4.60052 | 
| 1986 | 4.68388 | 
| 1985 | 4.7952 | 
| 1984 | 4.97307 | 
| 1983 | 5.15623 | 
| 1982 | 5.25428 | 
| 1981 | 5.29987 | 
| 1980 | 5.30885 | 
| 1979 | 5.29218 | 
| 1978 | 5.25697 | 
| 1977 | 5.2146 | 
| 1976 | 5.17627 | 
| 1975 | 5.14495 | 
| 1974 | 5.12066 | 
| 1973 | 5.10898 | 
| 1972 | 5.10989 | 
| 1971 | 5.11258 | 
| 1970 | 5.11095 | 
| 1969 | 5.10788 | 
| 1968 | 5.10386 | 
| 1967 | 5.09983 | 
| 1966 | 5.10403 | 
| 1965 | 5.12108 | 
| 1964 | 5.14903 | 
| 1963 | 5.18601 | 
| 1962 | 5.2305 | 
| 1961 | 5.2787 | 
| 1960 | 5.32688 |