| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 67.3336 |
| 2021 | 68.5401 |
| 2020 | 69.7158 |
| 2019 | 70.8687 |
| 2018 | 72.0818 |
| 2017 | 73.3778 |
| 2016 | 74.692 |
| 2015 | 75.979 |
| 2014 | 77.2002 |
| 2013 | 78.3029 |
| 2012 | 79.2318 |
| 2011 | 80.0213 |
| 2010 | 80.72 |
| 2009 | 81.3308 |
| 2008 | 81.8674 |
| 2007 | 82.3245 |
| 2006 | 82.6901 |
| 2005 | 82.9799 |
| 2004 | 83.2219 |
| 2003 | 83.3676 |
| 2002 | 83.4046 |
| 2001 | 83.3773 |
| 2000 | 83.3092 |
| 1999 | 83.0775 |
| 1998 | 82.7722 |
| 1997 | 82.5629 |
| 1996 | 82.3584 |
| 1995 | 82.1342 |
| 1994 | 81.9045 |
| 1993 | 81.6789 |
| 1992 | 81.4633 |
| 1991 | 81.2613 |
| 1990 | 81.0991 |
| 1989 | 80.9517 |
| 1988 | 80.7606 |
| 1987 | 80.507 |
| 1986 | 80.2339 |
| 1985 | 79.9603 |
| 1984 | 79.6869 |
| 1983 | 79.4206 |
| 1982 | 79.1745 |
| 1981 | 78.9359 |
| 1980 | 78.6833 |
| 1979 | 78.4123 |
| 1978 | 78.0993 |
| 1977 | 77.7313 |
| 1976 | 77.3236 |
| 1975 | 76.8612 |
| 1974 | 76.3244 |
| 1973 | 75.7497 |
| 1972 | 75.1478 |
| 1971 | 74.4995 |
| 1970 | 73.8055 |
| 1969 | 73.0547 |
| 1968 | 72.2322 |
| 1967 | 71.3575 |
| 1966 | 70.4802 |
| 1965 | 69.6111 |
| 1964 | 68.5916 |
| 1963 | 67.6153 |
| 1962 | 67.1259 |
| 1961 | 66.9383 |
| 1960 | 66.7996 |