| 年份 | 加蓬 |
|---|---|
| 2023 | - |
| 2022 | 2.05766 |
| 2021 | 2.02673 |
| 2020 | 1.99855 |
| 2019 | 1.97195 |
| 2018 | 1.94984 |
| 2017 | 1.93465 |
| 2016 | 1.9256 |
| 2015 | 1.92232 |
| 2014 | 1.92212 |
| 2013 | 1.91965 |
| 2012 | 1.92045 |
| 2011 | 1.9265 |
| 2010 | 1.92961 |
| 2009 | 1.93226 |
| 2008 | 1.94095 |
| 2007 | 1.94651 |
| 2006 | 1.94729 |
| 2005 | 1.95416 |
| 2004 | 1.96841 |
| 2003 | 1.99223 |
| 2002 | 2.02432 |
| 2001 | 2.05949 |
| 2000 | 2.09511 |
| 1999 | 2.12988 |
| 1998 | 2.16129 |
| 1997 | 2.19003 |
| 1996 | 2.21948 |
| 1995 | 2.25174 |
| 1994 | 2.28629 |
| 1993 | 2.32163 |
| 1992 | 2.3586 |
| 1991 | 2.39863 |
| 1990 | 2.44095 |
| 1989 | 2.48446 |
| 1988 | 2.52947 |
| 1987 | 2.5759 |
| 1986 | 2.62348 |
| 1985 | 2.67226 |
| 1984 | 2.72269 |
| 1983 | 2.77434 |
| 1982 | 2.82689 |
| 1981 | 2.8802 |
| 1980 | 2.93355 |
| 1979 | 2.98663 |
| 1978 | 3.03973 |
| 1977 | 3.09317 |
| 1976 | 3.14648 |
| 1975 | 3.19824 |
| 1974 | 3.24746 |
| 1973 | 3.29468 |
| 1972 | 3.34028 |
| 1971 | 3.38552 |
| 1970 | 3.43159 |
| 1969 | 3.47871 |
| 1968 | 3.52001 |
| 1967 | 3.55329 |
| 1966 | 3.58415 |
| 1965 | 3.61289 |
| 1964 | 3.63945 |
| 1963 | 3.66394 |
| 1962 | 3.68663 |
| 1961 | 3.70729 |
| 1960 | 3.72594 |