| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 2.99614 |
| 2021 | 2.99645 |
| 2020 | 3.00009 |
| 2019 | 3.01111 |
| 2018 | 3.06471 |
| 2017 | 3.1606 |
| 2016 | 3.29056 |
| 2015 | 3.44955 |
| 2014 | 3.64351 |
| 2013 | 3.8353 |
| 2012 | 3.99487 |
| 2011 | 4.12643 |
| 2010 | 4.22905 |
| 2009 | 4.30847 |
| 2008 | 4.37495 |
| 2007 | 4.4385 |
| 2006 | 4.50201 |
| 2005 | 4.55713 |
| 2004 | 4.60097 |
| 2003 | 4.6351 |
| 2002 | 4.6554 |
| 2001 | 4.65517 |
| 2000 | 4.64419 |
| 1999 | 4.62864 |
| 1998 | 4.60204 |
| 1997 | 4.56601 |
| 1996 | 4.52161 |
| 1995 | 4.46624 |
| 1994 | 4.39647 |
| 1993 | 4.27723 |
| 1992 | 4.11464 |
| 1991 | 3.9527 |
| 1990 | 3.79034 |
| 1989 | 3.6329 |
| 1988 | 3.55872 |
| 1987 | 3.57789 |
| 1986 | 3.61153 |
| 1985 | 3.64954 |
| 1984 | 3.69997 |
| 1983 | 3.76788 |
| 1982 | 3.85339 |
| 1981 | 3.95241 |
| 1980 | 4.05997 |
| 1979 | 4.17193 |
| 1978 | 4.28349 |
| 1977 | 4.3925 |
| 1976 | 4.50042 |
| 1975 | 4.57983 |
| 1974 | 4.63096 |
| 1973 | 4.68093 |
| 1972 | 4.72938 |
| 1971 | 4.7747 |
| 1970 | 4.8153 |
| 1969 | 4.85108 |
| 1968 | 4.88276 |
| 1967 | 4.90883 |
| 1966 | 4.92659 |
| 1965 | 4.93482 |
| 1964 | 4.93306 |
| 1963 | 4.91955 |
| 1962 | 4.9007 |
| 1961 | 4.89122 |
| 1960 | 4.89864 |