| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 2.22211 |
| 2021 | 2.26714 |
| 2020 | 2.3055 |
| 2019 | 2.33707 |
| 2018 | 2.35509 |
| 2017 | 2.36139 |
| 2016 | 2.35783 |
| 2015 | 2.34507 |
| 2014 | 2.31508 |
| 2013 | 2.27791 |
| 2012 | 2.24431 |
| 2011 | 2.21127 |
| 2010 | 2.18057 |
| 2009 | 2.14712 |
| 2008 | 2.08985 |
| 2007 | 2.01229 |
| 2006 | 1.93541 |
| 2005 | 1.86043 |
| 2004 | 1.78941 |
| 2003 | 1.74402 |
| 2002 | 1.72009 |
| 2001 | 1.69277 |
| 2000 | 1.66384 |
| 1999 | 1.63573 |
| 1998 | 1.61104 |
| 1997 | 1.59034 |
| 1996 | 1.57388 |
| 1995 | 1.56204 |
| 1994 | 1.55366 |
| 1993 | 1.54762 |
| 1992 | 1.54552 |
| 1991 | 1.54917 |
| 1990 | 1.55734 |
| 1989 | 1.56598 |
| 1988 | 1.60853 |
| 1987 | 1.707 |
| 1986 | 1.82687 |
| 1985 | 1.94832 |
| 1984 | 2.06967 |
| 1983 | 2.18868 |
| 1982 | 2.30249 |
| 1981 | 2.40855 |
| 1980 | 2.50434 |
| 1979 | 2.58822 |
| 1978 | 2.65954 |
| 1977 | 2.72341 |
| 1976 | 2.78975 |
| 1975 | 2.82991 |
| 1974 | 2.84461 |
| 1973 | 2.87119 |
| 1972 | 2.90754 |
| 1971 | 2.94581 |
| 1970 | 2.98184 |
| 1969 | 3.01744 |
| 1968 | 3.05212 |
| 1967 | 3.08268 |
| 1966 | 3.1103 |
| 1965 | 3.13682 |
| 1964 | 3.16085 |
| 1963 | 3.18008 |
| 1962 | 3.19755 |
| 1961 | 3.21861 |
| 1960 | 3.24635 |