| 年份 | 喀麦隆 |
|---|---|
| 2023 | - |
| 2022 | 2.5981 |
| 2021 | 2.63582 |
| 2020 | 2.71185 |
| 2019 | 2.77488 |
| 2018 | 2.76374 |
| 2017 | 2.8338 |
| 2016 | 2.99218 |
| 2015 | 3.14758 |
| 2014 | 3.03551 |
| 2013 | 2.81354 |
| 2012 | 2.81498 |
| 2011 | 2.83124 |
| 2010 | 2.85122 |
| 2009 | 2.84662 |
| 2008 | 2.83697 |
| 2007 | 2.78067 |
| 2006 | 2.71903 |
| 2005 | 2.73316 |
| 2004 | 2.74462 |
| 2003 | 2.72912 |
| 2002 | 2.67967 |
| 2001 | 2.62667 |
| 2000 | 2.63603 |
| 1999 | 2.64977 |
| 1998 | 2.64328 |
| 1997 | 2.65934 |
| 1996 | 2.71549 |
| 1995 | 2.78435 |
| 1994 | 2.85853 |
| 1993 | 2.91033 |
| 1992 | 2.93571 |
| 1991 | 2.99226 |
| 1990 | 3.03133 |
| 1989 | 3.01778 |
| 1988 | 3.07353 |
| 1987 | 3.12674 |
| 1986 | 3.09769 |
| 1985 | 3.06229 |
| 1984 | 2.85789 |
| 1983 | 2.11829 |
| 1982 | 2.43845 |
| 1981 | 3.56436 |
| 1980 | 3.29935 |
| 1979 | 2.831 |
| 1978 | 2.73834 |
| 1977 | 2.58279 |
| 1976 | 2.67579 |
| 1975 | 2.77867 |
| 1974 | 2.76215 |
| 1973 | 2.74087 |
| 1972 | 2.7109 |
| 1971 | 2.66929 |
| 1970 | 2.61503 |
| 1969 | 2.56251 |
| 1968 | 2.51381 |
| 1967 | 2.46537 |
| 1966 | 2.42196 |
| 1965 | 2.38093 |
| 1964 | 2.34354 |
| 1963 | 2.30494 |
| 1962 | 1.97044 |
| 1961 | 1.60398 |
| 1960 | - |