| 年份 | 加蓬 |
|---|---|
| 2023 | - |
| 2022 | 2.90804 |
| 2021 | 1.52682 |
| 2020 | -1.83776 |
| 2019 | 3.92081 |
| 2018 | 0.837917 |
| 2017 | 0.472642 |
| 2016 | 2.09144 |
| 2015 | 3.8789 |
| 2014 | 4.31496 |
| 2013 | 5.6387 |
| 2012 | 5.25108 |
| 2011 | 7.09175 |
| 2010 | 7.08989 |
| 2009 | 0.130331 |
| 2008 | -3.30843 |
| 2007 | 6.00811 |
| 2006 | -2.80658 |
| 2005 | 2.6762 |
| 2004 | 0.689543 |
| 2003 | 2.24733 |
| 2002 | -0.249033 |
| 2001 | 2.13523 |
| 2000 | -1.88297 |
| 1999 | -8.93262 |
| 1998 | 3.47783 |
| 1997 | 5.73837 |
| 1996 | 3.62505 |
| 1995 | 4.97385 |
| 1994 | 3.71275 |
| 1993 | 3.94655 |
| 1992 | -3.09015 |
| 1991 | 6.1125 |
| 1990 | 5.19224 |
| 1989 | 8.54531 |
| 1988 | 12.8454 |
| 1987 | -17.146 |
| 1986 | -0.803598 |
| 1985 | -2.33295 |
| 1984 | 7.5089 |
| 1983 | 5.60824 |
| 1982 | -3.09752 |
| 1981 | 5.09533 |
| 1980 | 2.55294 |
| 1979 | 0.474405 |
| 1978 | -24.0492 |
| 1977 | -12.5821 |
| 1976 | 35.6253 |
| 1975 | 19.1901 |
| 1974 | 39.4871 |
| 1973 | 10.1824 |
| 1972 | 11.337 |
| 1971 | 10.2587 |
| 1970 | 8.67934 |
| 1969 | 8.08291 |
| 1968 | 2.5088 |
| 1967 | 4.11515 |
| 1966 | 4.508 |
| 1965 | 8.33334 |
| 1964 | 4.55445 |
| 1963 | 6.09244 |
| 1962 | 7.44921 |
| 1961 | 14.7668 |
| 1960 | - |