| 年份 | 加蓬 |
|---|---|
| 2023 | - |
| 2022 | 1.15357 |
| 2021 | 1.14858 |
| 2020 | 1.14024 |
| 2019 | 1.13167 |
| 2018 | 1.12728 |
| 2017 | 1.12241 |
| 2016 | 1.11759 |
| 2015 | 1.1179 |
| 2014 | 1.12438 |
| 2013 | 1.13818 |
| 2012 | 1.15755 |
| 2011 | 1.17976 |
| 2010 | 1.20344 |
| 2009 | 1.22715 |
| 2008 | 1.24898 |
| 2007 | 1.26924 |
| 2006 | 1.29052 |
| 2005 | 1.31351 |
| 2004 | 1.33699 |
| 2003 | 1.36043 |
| 2002 | 1.38444 |
| 2001 | 1.40927 |
| 2000 | 1.43467 |
| 1999 | 1.46041 |
| 1998 | 1.48662 |
| 1997 | 1.51357 |
| 1996 | 1.54118 |
| 1995 | 1.56941 |
| 1994 | 1.59847 |
| 1993 | 1.62845 |
| 1992 | 1.65959 |
| 1991 | 1.69153 |
| 1990 | 1.72406 |
| 1989 | 1.75711 |
| 1988 | 1.7905 |
| 1987 | 1.82409 |
| 1986 | 1.85735 |
| 1985 | 1.89039 |
| 1984 | 1.92376 |
| 1983 | 1.95709 |
| 1982 | 1.98992 |
| 1981 | 2.0221 |
| 1980 | 2.05326 |
| 1979 | 2.08347 |
| 1978 | 2.11284 |
| 1977 | 2.14239 |
| 1976 | 2.17102 |
| 1975 | 2.1981 |
| 1974 | 2.22427 |
| 1973 | 2.24948 |
| 1972 | 2.2736 |
| 1971 | 2.29717 |
| 1970 | 2.32106 |
| 1969 | 2.34544 |
| 1968 | 2.36511 |
| 1967 | 2.37824 |
| 1966 | 2.38917 |
| 1965 | 2.39801 |
| 1964 | 2.4048 |
| 1963 | 2.41022 |
| 1962 | 2.41443 |
| 1961 | 2.41726 |
| 1960 | 2.41822 |