| 年份 | 塞拉利昂 |
|---|---|
| 2023 | - |
| 2022 | 5.7668 |
| 2021 | 5.70334 |
| 2020 | 5.64321 |
| 2019 | 5.58915 |
| 2018 | 5.54323 |
| 2017 | 5.50315 |
| 2016 | 5.46661 |
| 2015 | 5.4345 |
| 2014 | 5.40627 |
| 2013 | 5.37675 |
| 2012 | 5.34752 |
| 2011 | 5.32309 |
| 2010 | 5.29981 |
| 2009 | 5.27739 |
| 2008 | 5.26145 |
| 2007 | 5.2535 |
| 2006 | 5.24775 |
| 2005 | 5.24173 |
| 2004 | 5.23624 |
| 2003 | 5.23162 |
| 2002 | 5.22344 |
| 2001 | 5.21231 |
| 2000 | 5.19965 |
| 1999 | 5.18003 |
| 1998 | 5.15406 |
| 1997 | 5.12735 |
| 1996 | 5.10105 |
| 1995 | 5.07289 |
| 1994 | 5.04464 |
| 1993 | 5.01421 |
| 1992 | 4.9834 |
| 1991 | 4.95706 |
| 1990 | 4.93854 |
| 1989 | 4.90259 |
| 1988 | 4.8848 |
| 1987 | 4.95302 |
| 1986 | 5.06661 |
| 1985 | 5.18426 |
| 1984 | 5.33713 |
| 1983 | 5.47948 |
| 1982 | 5.52471 |
| 1981 | 5.51527 |
| 1980 | 5.50298 |
| 1979 | 5.49324 |
| 1978 | 5.49966 |
| 1977 | 5.52326 |
| 1976 | 5.55615 |
| 1975 | 5.59037 |
| 1974 | 5.62281 |
| 1973 | 5.65108 |
| 1972 | 5.6752 |
| 1971 | 5.70055 |
| 1970 | 5.72957 |
| 1969 | 5.7596 |
| 1968 | 5.78719 |
| 1967 | 5.81314 |
| 1966 | 5.8392 |
| 1965 | 5.86585 |
| 1964 | 5.89248 |
| 1963 | 5.91776 |
| 1962 | 5.94048 |
| 1961 | 5.96012 |
| 1960 | 5.97625 |