| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.247636 |
| 2021 | 0.246384 |
| 2020 | 0.246149 |
| 2019 | 0.242273 |
| 2018 | 0.237869 |
| 2017 | 0.234633 |
| 2016 | 0.232305 |
| 2015 | 0.230969 |
| 2014 | 0.234647 |
| 2013 | 0.241032 |
| 2012 | 0.246853 |
| 2011 | 0.253706 |
| 2010 | 0.259413 |
| 2009 | 0.263513 |
| 2008 | 0.267642 |
| 2007 | 0.27284 |
| 2006 | 0.280061 |
| 2005 | 0.287517 |
| 2004 | 0.294058 |
| 2003 | 0.301655 |
| 2002 | 0.309128 |
| 2001 | 0.320622 |
| 2000 | 0.334994 |
| 1999 | 0.34883 |
| 1998 | 0.366483 |
| 1997 | 0.388314 |
| 1996 | 0.412868 |
| 1995 | 0.440377 |
| 1994 | 0.468391 |
| 1993 | 0.494763 |
| 1992 | 0.521825 |
| 1991 | 0.551134 |
| 1990 | 0.583921 |
| 1989 | 0.620529 |
| 1988 | 0.646971 |
| 1987 | 0.65336 |
| 1986 | 0.650295 |
| 1985 | 0.643943 |
| 1984 | 0.634764 |
| 1983 | 0.622663 |
| 1982 | 0.607196 |
| 1981 | 0.588318 |
| 1980 | 0.565996 |
| 1979 | 0.540492 |
| 1978 | 0.511415 |
| 1977 | 0.47928 |
| 1976 | 0.445662 |
| 1975 | 0.426594 |
| 1974 | 0.423765 |
| 1973 | 0.42393 |
| 1972 | 0.427885 |
| 1971 | 0.433983 |
| 1970 | 0.440685 |
| 1969 | 0.447816 |
| 1968 | 0.45552 |
| 1967 | 0.463097 |
| 1966 | 0.470025 |
| 1965 | 0.476888 |
| 1964 | 0.482874 |
| 1963 | 0.486845 |
| 1962 | 0.489412 |
| 1961 | 0.491757 |
| 1960 | 0.494229 |