| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 0.411841 |
| 2021 | 0.412823 |
| 2020 | 0.414789 |
| 2019 | 0.414292 |
| 2018 | 0.410757 |
| 2017 | 0.407325 |
| 2016 | 0.404537 |
| 2015 | 0.402562 |
| 2014 | 0.401525 |
| 2013 | 0.400959 |
| 2012 | 0.400676 |
| 2011 | 0.401071 |
| 2010 | 0.401932 |
| 2009 | 0.403035 |
| 2008 | 0.404556 |
| 2007 | 0.406549 |
| 2006 | 0.409041 |
| 2005 | 0.411793 |
| 2004 | 0.414729 |
| 2003 | 0.417911 |
| 2002 | 0.421441 |
| 2001 | 0.424888 |
| 2000 | 0.42854 |
| 1999 | 0.43275 |
| 1998 | 0.437651 |
| 1997 | 0.442745 |
| 1996 | 0.447183 |
| 1995 | 0.451785 |
| 1994 | 0.45662 |
| 1993 | 0.460671 |
| 1992 | 0.463939 |
| 1991 | 0.467137 |
| 1990 | 0.469791 |
| 1989 | 0.472102 |
| 1988 | 0.474183 |
| 1987 | 0.47601 |
| 1986 | 0.477641 |
| 1985 | 0.479086 |
| 1984 | 0.480286 |
| 1983 | 0.481199 |
| 1982 | 0.481891 |
| 1981 | 0.482198 |
| 1980 | 0.482349 |
| 1979 | 0.482224 |
| 1978 | 0.481508 |
| 1977 | 0.480422 |
| 1976 | 0.478701 |
| 1975 | 0.476255 |
| 1974 | 0.47344 |
| 1973 | 0.470365 |
| 1972 | 0.466812 |
| 1971 | 0.462622 |
| 1970 | 0.458387 |
| 1969 | 0.453843 |
| 1968 | 0.448471 |
| 1967 | 0.442569 |
| 1966 | 0.435883 |
| 1965 | 0.428191 |
| 1964 | 0.419354 |
| 1963 | 0.409196 |
| 1962 | 0.397889 |
| 1961 | 0.38571 |
| 1960 | 0.372833 |