| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 0.474793 |
| 2021 | 0.474585 |
| 2020 | 0.474342 |
| 2019 | 0.471287 |
| 2018 | 0.46686 |
| 2017 | 0.464718 |
| 2016 | 0.46423 |
| 2015 | 0.46424 |
| 2014 | 0.464441 |
| 2013 | 0.464592 |
| 2012 | 0.464688 |
| 2011 | 0.465298 |
| 2010 | 0.466752 |
| 2009 | 0.468736 |
| 2008 | 0.470995 |
| 2007 | 0.473706 |
| 2006 | 0.476903 |
| 2005 | 0.480925 |
| 2004 | 0.48574 |
| 2003 | 0.490971 |
| 2002 | 0.496587 |
| 2001 | 0.502133 |
| 2000 | 0.507803 |
| 1999 | 0.51493 |
| 1998 | 0.523244 |
| 1997 | 0.53104 |
| 1996 | 0.538137 |
| 1995 | 0.54562 |
| 1994 | 0.553493 |
| 1993 | 0.560916 |
| 1992 | 0.567872 |
| 1991 | 0.574776 |
| 1990 | 0.580809 |
| 1989 | 0.586391 |
| 1988 | 0.591858 |
| 1987 | 0.59698 |
| 1986 | 0.601625 |
| 1985 | 0.605724 |
| 1984 | 0.609377 |
| 1983 | 0.612554 |
| 1982 | 0.615078 |
| 1981 | 0.616862 |
| 1980 | 0.618053 |
| 1979 | 0.618753 |
| 1978 | 0.619159 |
| 1977 | 0.619524 |
| 1976 | 0.619078 |
| 1975 | 0.618097 |
| 1974 | 0.617037 |
| 1973 | 0.615294 |
| 1972 | 0.612554 |
| 1971 | 0.608908 |
| 1970 | 0.604799 |
| 1969 | 0.600444 |
| 1968 | 0.595671 |
| 1967 | 0.590423 |
| 1966 | 0.584831 |
| 1965 | 0.578839 |
| 1964 | 0.572258 |
| 1963 | 0.564745 |
| 1962 | 0.556019 |
| 1961 | 0.54593 |
| 1960 | 0.534372 |