| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 0.637821 |
| 2021 | 0.634014 |
| 2020 | 0.629575 |
| 2019 | 0.622477 |
| 2018 | 0.614817 |
| 2017 | 0.610022 |
| 2016 | 0.607493 |
| 2015 | 0.605869 |
| 2014 | 0.605006 |
| 2013 | 0.604254 |
| 2012 | 0.603459 |
| 2011 | 0.60361 |
| 2010 | 0.604846 |
| 2009 | 0.606746 |
| 2008 | 0.608939 |
| 2007 | 0.611697 |
| 2006 | 0.615252 |
| 2005 | 0.61946 |
| 2004 | 0.624172 |
| 2003 | 0.629219 |
| 2002 | 0.634696 |
| 2001 | 0.640043 |
| 2000 | 0.64542 |
| 1999 | 0.651344 |
| 1998 | 0.658196 |
| 1997 | 0.665336 |
| 1996 | 0.67186 |
| 1995 | 0.678987 |
| 1994 | 0.686794 |
| 1993 | 0.693999 |
| 1992 | 0.700464 |
| 1991 | 0.706958 |
| 1990 | 0.712457 |
| 1989 | 0.717147 |
| 1988 | 0.721543 |
| 1987 | 0.725451 |
| 1986 | 0.72886 |
| 1985 | 0.732057 |
| 1984 | 0.735032 |
| 1983 | 0.737619 |
| 1982 | 0.739448 |
| 1981 | 0.740495 |
| 1980 | 0.74132 |
| 1979 | 0.741908 |
| 1978 | 0.742344 |
| 1977 | 0.743111 |
| 1976 | 0.743453 |
| 1975 | 0.743295 |
| 1974 | 0.743161 |
| 1973 | 0.742583 |
| 1972 | 0.741177 |
| 1971 | 0.738736 |
| 1970 | 0.735643 |
| 1969 | 0.731923 |
| 1968 | 0.727414 |
| 1967 | 0.722461 |
| 1966 | 0.717243 |
| 1965 | 0.71178 |
| 1964 | 0.706033 |
| 1963 | 0.699704 |
| 1962 | 0.692402 |
| 1961 | 0.683704 |
| 1960 | 0.673172 |