| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.352484 |
| 2021 | 0.352567 |
| 2020 | 0.351131 |
| 2019 | 0.346029 |
| 2018 | 0.339648 |
| 2017 | 0.334648 |
| 2016 | 0.330642 |
| 2015 | 0.327386 |
| 2014 | 0.326492 |
| 2013 | 0.326935 |
| 2012 | 0.327296 |
| 2011 | 0.328776 |
| 2010 | 0.330843 |
| 2009 | 0.332871 |
| 2008 | 0.334814 |
| 2007 | 0.336713 |
| 2006 | 0.33845 |
| 2005 | 0.339922 |
| 2004 | 0.341004 |
| 2003 | 0.341896 |
| 2002 | 0.342441 |
| 2001 | 0.344415 |
| 2000 | 0.347105 |
| 1999 | 0.348532 |
| 1998 | 0.349933 |
| 1997 | 0.351971 |
| 1996 | 0.35528 |
| 1995 | 0.361288 |
| 1994 | 0.370548 |
| 1993 | 0.383883 |
| 1992 | 0.402879 |
| 1991 | 0.427137 |
| 1990 | 0.455516 |
| 1989 | 0.486983 |
| 1988 | 0.515527 |
| 1987 | 0.536898 |
| 1986 | 0.55508 |
| 1985 | 0.572391 |
| 1984 | 0.58869 |
| 1983 | 0.603181 |
| 1982 | 0.615356 |
| 1981 | 0.624823 |
| 1980 | 0.631067 |
| 1979 | 0.63414 |
| 1978 | 0.634862 |
| 1977 | 0.633161 |
| 1976 | 0.627794 |
| 1975 | 0.623936 |
| 1974 | 0.621989 |
| 1973 | 0.615847 |
| 1972 | 0.606613 |
| 1971 | 0.598569 |
| 1970 | 0.594869 |
| 1969 | 0.595581 |
| 1968 | 0.601418 |
| 1967 | 0.612227 |
| 1966 | 0.624673 |
| 1965 | 0.63671 |
| 1964 | 0.649142 |
| 1963 | 0.662657 |
| 1962 | 0.676197 |
| 1961 | 0.68909 |
| 1960 | 0.700333 |