| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 1.79876 |
| 2021 | 1.80644 |
| 2020 | 1.80597 |
| 2019 | 1.79816 |
| 2018 | 1.78016 |
| 2017 | 1.75705 |
| 2016 | 1.73083 |
| 2015 | 1.70078 |
| 2014 | 1.65698 |
| 2013 | 1.59252 |
| 2012 | 1.51875 |
| 2011 | 1.4496 |
| 2010 | 1.38584 |
| 2009 | 1.32721 |
| 2008 | 1.28926 |
| 2007 | 1.26787 |
| 2006 | 1.24418 |
| 2005 | 1.22107 |
| 2004 | 1.20069 |
| 2003 | 1.18384 |
| 2002 | 1.17105 |
| 2001 | 1.1608 |
| 2000 | 1.15495 |
| 1999 | 1.15436 |
| 1998 | 1.15567 |
| 1997 | 1.15917 |
| 1996 | 1.16593 |
| 1995 | 1.17452 |
| 1994 | 1.18343 |
| 1993 | 1.19239 |
| 1992 | 1.20065 |
| 1991 | 1.20835 |
| 1990 | 1.21759 |
| 1989 | 1.23052 |
| 1988 | 1.27496 |
| 1987 | 1.36313 |
| 1986 | 1.46227 |
| 1985 | 1.55402 |
| 1984 | 1.63684 |
| 1983 | 1.71087 |
| 1982 | 1.78101 |
| 1981 | 1.85538 |
| 1980 | 1.93764 |
| 1979 | 2.02705 |
| 1978 | 2.12324 |
| 1977 | 2.22145 |
| 1976 | 2.31232 |
| 1975 | 2.36459 |
| 1974 | 2.38401 |
| 1973 | 2.4014 |
| 1972 | 2.41583 |
| 1971 | 2.42994 |
| 1970 | 2.44629 |
| 1969 | 2.46416 |
| 1968 | 2.48128 |
| 1967 | 2.49775 |
| 1966 | 2.51654 |
| 1965 | 2.54021 |
| 1964 | 2.56945 |
| 1963 | 2.60628 |
| 1962 | 2.64692 |
| 1961 | 2.68034 |
| 1960 | 2.6987 |