| 年份 | 冈比亚 |
|---|---|
| 2023 | - |
| 2022 | 0.744358 |
| 2021 | 0.803605 |
| 2020 | 0.837229 |
| 2019 | 0.861299 |
| 2018 | 0.923658 |
| 2017 | 1.00987 |
| 2016 | 1.09732 |
| 2015 | 1.18448 |
| 2014 | 1.28154 |
| 2013 | 1.37032 |
| 2012 | 1.42767 |
| 2011 | 1.45522 |
| 2010 | 1.47919 |
| 2009 | 1.51544 |
| 2008 | 1.52329 |
| 2007 | 1.52644 |
| 2006 | 1.48569 |
| 2005 | 1.42835 |
| 2004 | 1.39906 |
| 2003 | 1.10351 |
| 2002 | 1.06171 |
| 2001 | 1.11859 |
| 2000 | 1.17161 |
| 1999 | 1.23893 |
| 1998 | 1.27371 |
| 1997 | 1.30024 |
| 1996 | 1.33386 |
| 1995 | 1.40449 |
| 1994 | 1.63704 |
| 1993 | 1.77788 |
| 1992 | 2.09753 |
| 1991 | 2.2457 |
| 1990 | 2.26286 |
| 1989 | 2.27662 |
| 1988 | 2.27027 |
| 1987 | 2.25733 |
| 1986 | 2.23565 |
| 1985 | 2.20865 |
| 1984 | 2.15025 |
| 1983 | 2.20179 |
| 1982 | 2.14665 |
| 1981 | 2.13716 |
| 1980 | 2.16376 |
| 1979 | 2.12636 |
| 1978 | 2.09233 |
| 1977 | 2.07272 |
| 1976 | 2.03041 |
| 1975 | 1.99296 |
| 1974 | 2.01416 |
| 1973 | 1.52435 |
| 1972 | 1.43631 |
| 1971 | 1.48637 |
| 1970 | 1.54697 |
| 1969 | 1.6074 |
| 1968 | 1.65288 |
| 1967 | 1.67164 |
| 1966 | 1.70184 |
| 1965 | 1.77256 |
| 1964 | 1.83177 |
| 1963 | 2.39599 |
| 1962 | 2.53002 |
| 1961 | 2.52192 |
| 1960 | - |