| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.752797 |
| 2021 | 0.722202 |
| 2020 | 0.689888 |
| 2019 | 0.655356 |
| 2018 | 0.628829 |
| 2017 | 0.611395 |
| 2016 | 0.592689 |
| 2015 | 0.573973 |
| 2014 | 0.555606 |
| 2013 | 0.539769 |
| 2012 | 0.527261 |
| 2011 | 0.517757 |
| 2010 | 0.51157 |
| 2009 | 0.507988 |
| 2008 | 0.506281 |
| 2007 | 0.506817 |
| 2006 | 0.510206 |
| 2005 | 0.515984 |
| 2004 | 0.522784 |
| 2003 | 0.529773 |
| 2002 | 0.53723 |
| 2001 | 0.543504 |
| 2000 | 0.551036 |
| 1999 | 0.562395 |
| 1998 | 0.575146 |
| 1997 | 0.588734 |
| 1996 | 0.602678 |
| 1995 | 0.614864 |
| 1994 | 0.624933 |
| 1993 | 0.633444 |
| 1992 | 0.641349 |
| 1991 | 0.653373 |
| 1990 | 0.673358 |
| 1989 | 0.704542 |
| 1988 | 0.753997 |
| 1987 | 0.81888 |
| 1986 | 0.884341 |
| 1985 | 0.942913 |
| 1984 | 0.99477 |
| 1983 | 1.04006 |
| 1982 | 1.07951 |
| 1981 | 1.11521 |
| 1980 | 1.14802 |
| 1979 | 1.17705 |
| 1978 | 1.20064 |
| 1977 | 1.21886 |
| 1976 | 1.23196 |
| 1975 | 1.23797 |
| 1974 | 1.24146 |
| 1973 | 1.24918 |
| 1972 | 1.25954 |
| 1971 | 1.26826 |
| 1970 | 1.27218 |
| 1969 | 1.27105 |
| 1968 | 1.26312 |
| 1967 | 1.24936 |
| 1966 | 1.23748 |
| 1965 | 1.2337 |
| 1964 | 1.23841 |
| 1963 | 1.2524 |
| 1962 | 1.27603 |
| 1961 | 1.30463 |
| 1960 | 1.33438 |