| 年份 | 加蓬 |
|---|---|
| 2023 | - |
| 2022 | 0.848454 |
| 2021 | -0.581012 |
| 2020 | -3.96956 |
| 2019 | 1.56821 |
| 2018 | -1.54487 |
| 2017 | -2.06282 |
| 2016 | -0.731651 |
| 2015 | 0.721233 |
| 2014 | 0.887273 |
| 2013 | 2.00004 |
| 2012 | 1.57185 |
| 2011 | 3.38236 |
| 2010 | 3.48729 |
| 2009 | -3.11324 |
| 2008 | -6.34241 |
| 2007 | 2.77678 |
| 2006 | -5.66449 |
| 2005 | -0.227534 |
| 2004 | -2.06105 |
| 2003 | -0.475165 |
| 2002 | -2.85906 |
| 2001 | -0.495555 |
| 2000 | -4.36269 |
| 1999 | -11.2029 |
| 1998 | 0.909687 |
| 1997 | 3.12091 |
| 1996 | 1.04595 |
| 1995 | 2.32107 |
| 1994 | 1.03641 |
| 1993 | 1.22015 |
| 1992 | -5.6544 |
| 1991 | 3.27929 |
| 1990 | 2.35448 |
| 1989 | 5.5897 |
| 1988 | 9.75906 |
| 1987 | -19.4051 |
| 1986 | -3.49191 |
| 1985 | -4.96312 |
| 1984 | 4.6298 |
| 1983 | 2.80716 |
| 1982 | -5.63561 |
| 1981 | 2.38547 |
| 1980 | -0.0332087 |
| 1979 | -2.0097 |
| 1978 | -25.8841 |
| 1977 | -14.6289 |
| 1976 | 32.5637 |
| 1975 | 16.5995 |
| 1974 | 36.5564 |
| 1973 | 7.92793 |
| 1972 | 9.08335 |
| 1971 | 7.99801 |
| 1970 | 6.3929 |
| 1969 | 6.04615 |
| 1968 | 0.869156 |
| 1967 | 2.51258 |
| 1966 | 2.96356 |
| 1965 | 6.80885 |
| 1964 | 3.1526 |
| 1963 | 4.7303 |
| 1962 | 6.13612 |
| 1961 | 13.4433 |
| 1960 | - |