| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 1.43072 |
| 2021 | 1.48832 |
| 2020 | 1.54449 |
| 2019 | 1.59251 |
| 2018 | 1.62885 |
| 2017 | 1.65811 |
| 2016 | 1.68074 |
| 2015 | 1.69536 |
| 2014 | 1.69528 |
| 2013 | 1.6694 |
| 2012 | 1.62675 |
| 2011 | 1.58346 |
| 2010 | 1.53965 |
| 2009 | 1.49556 |
| 2008 | 1.46956 |
| 2007 | 1.45807 |
| 2006 | 1.44113 |
| 2005 | 1.42341 |
| 2004 | 1.40842 |
| 2003 | 1.39787 |
| 2002 | 1.39255 |
| 2001 | 1.38827 |
| 2000 | 1.38697 |
| 1999 | 1.39046 |
| 1998 | 1.39359 |
| 1997 | 1.39683 |
| 1996 | 1.4016 |
| 1995 | 1.40645 |
| 1994 | 1.41205 |
| 1993 | 1.4192 |
| 1992 | 1.42521 |
| 1991 | 1.42874 |
| 1990 | 1.42985 |
| 1989 | 1.42953 |
| 1988 | 1.444 |
| 1987 | 1.48316 |
| 1986 | 1.53186 |
| 1985 | 1.58095 |
| 1984 | 1.62946 |
| 1983 | 1.6775 |
| 1982 | 1.72671 |
| 1981 | 1.77904 |
| 1980 | 1.83551 |
| 1979 | 1.89618 |
| 1978 | 1.96087 |
| 1977 | 2.02739 |
| 1976 | 2.09155 |
| 1975 | 2.13293 |
| 1974 | 2.15392 |
| 1973 | 2.17433 |
| 1972 | 2.19355 |
| 1971 | 2.21302 |
| 1970 | 2.23393 |
| 1969 | 2.25612 |
| 1968 | 2.27781 |
| 1967 | 2.2986 |
| 1966 | 2.32129 |
| 1965 | 2.34815 |
| 1964 | 2.37982 |
| 1963 | 2.41799 |
| 1962 | 2.45913 |
| 1961 | 2.49337 |
| 1960 | 2.51314 |