| 年份 | 加蓬 |
|---|---|
| 2023 | - |
| 2022 | 2.02169 |
| 2021 | 2.09799 |
| 2020 | 2.19564 |
| 2019 | 2.28986 |
| 2018 | 2.39136 |
| 2017 | 2.55592 |
| 2016 | 2.80421 |
| 2015 | 3.08692 |
| 2014 | 3.3411 |
| 2013 | 3.50516 |
| 2012 | 3.55822 |
| 2011 | 3.52516 |
| 2010 | 3.42197 |
| 2009 | 3.29298 |
| 2008 | 3.18808 |
| 2007 | 3.09561 |
| 2006 | 2.98453 |
| 2005 | 2.86881 |
| 2004 | 2.76976 |
| 2003 | 2.69875 |
| 2002 | 2.65138 |
| 2001 | 2.60954 |
| 2000 | 2.55979 |
| 1999 | 2.52458 |
| 1998 | 2.51315 |
| 1997 | 2.50656 |
| 1996 | 2.52037 |
| 1995 | 2.55957 |
| 1994 | 2.61441 |
| 1993 | 2.6579 |
| 1992 | 2.68165 |
| 1991 | 2.70631 |
| 1990 | 2.73474 |
| 1989 | 2.76068 |
| 1988 | 2.77308 |
| 1987 | 2.76444 |
| 1986 | 2.74749 |
| 1985 | 2.72992 |
| 1984 | 2.71452 |
| 1983 | 2.68814 |
| 1982 | 2.65414 |
| 1981 | 2.6123 |
| 1980 | 2.55411 |
| 1979 | 2.50345 |
| 1978 | 2.44549 |
| 1977 | 2.36923 |
| 1976 | 2.28326 |
| 1975 | 2.19752 |
| 1974 | 2.12341 |
| 1973 | 2.06738 |
| 1972 | 2.04491 |
| 1971 | 2.07169 |
| 1970 | 2.12629 |
| 1969 | 1.90243 |
| 1968 | 1.61245 |
| 1967 | 1.5512 |
| 1966 | 1.48886 |
| 1965 | 1.41721 |
| 1964 | 1.34986 |
| 1963 | 1.29222 |
| 1962 | 1.22958 |
| 1961 | 1.15992 |
| 1960 | - |