| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 72.7583 |
| 2021 | 74.0044 |
| 2020 | 75.2306 |
| 2019 | 76.4192 |
| 2018 | 77.6567 |
| 2017 | 78.9939 |
| 2016 | 80.3609 |
| 2015 | 81.7055 |
| 2014 | 83.0095 |
| 2013 | 84.206 |
| 2012 | 85.1851 |
| 2011 | 85.9982 |
| 2010 | 86.7228 |
| 2009 | 87.3604 |
| 2008 | 87.9322 |
| 2007 | 88.4359 |
| 2006 | 88.8572 |
| 2005 | 89.208 |
| 2004 | 89.514 |
| 2003 | 89.7222 |
| 2002 | 89.8199 |
| 2001 | 89.8525 |
| 2000 | 89.8485 |
| 1999 | 89.6856 |
| 1998 | 89.4534 |
| 1997 | 89.3186 |
| 1996 | 89.1828 |
| 1995 | 89.0306 |
| 1994 | 88.877 |
| 1993 | 88.7222 |
| 1992 | 88.5709 |
| 1991 | 88.4323 |
| 1990 | 88.3264 |
| 1989 | 88.2313 |
| 1988 | 88.0888 |
| 1987 | 87.8783 |
| 1986 | 87.6444 |
| 1985 | 87.4084 |
| 1984 | 87.1711 |
| 1983 | 86.9386 |
| 1982 | 86.7226 |
| 1981 | 86.5069 |
| 1980 | 86.2723 |
| 1979 | 86.0144 |
| 1978 | 85.7077 |
| 1977 | 85.3405 |
| 1976 | 84.9229 |
| 1975 | 84.4413 |
| 1974 | 83.8813 |
| 1973 | 83.2777 |
| 1972 | 82.6411 |
| 1971 | 81.9494 |
| 1970 | 81.2072 |
| 1969 | 80.4044 |
| 1968 | 79.5224 |
| 1967 | 78.5817 |
| 1966 | 77.6333 |
| 1965 | 76.6881 |
| 1964 | 75.5802 |
| 1963 | 74.5088 |
| 1962 | 73.9348 |
| 1961 | 73.6654 |
| 1960 | 73.4365 |