| 年份 | 中非共和国 |
|---|---|
| 2023 | - |
| 2022 | 2.04388 |
| 2021 | 2.09365 |
| 2020 | 2.13966 |
| 2019 | 2.17806 |
| 2018 | 2.21606 |
| 2017 | 2.26143 |
| 2016 | 2.31488 |
| 2015 | 2.37464 |
| 2014 | 2.44489 |
| 2013 | 2.51978 |
| 2012 | 2.59363 |
| 2011 | 2.66535 |
| 2010 | 2.73329 |
| 2009 | 2.79595 |
| 2008 | 2.85182 |
| 2007 | 2.90019 |
| 2006 | 2.94005 |
| 2005 | 2.97057 |
| 2004 | 2.98796 |
| 2003 | 2.96594 |
| 2002 | 2.91137 |
| 2001 | 2.85019 |
| 2000 | 2.78282 |
| 1999 | 2.71358 |
| 1998 | 2.67319 |
| 1997 | 2.65555 |
| 1996 | 2.62657 |
| 1995 | 2.59276 |
| 1994 | 2.56093 |
| 1993 | 2.53589 |
| 1992 | 2.51761 |
| 1991 | 2.50458 |
| 1990 | 2.49454 |
| 1989 | 2.48566 |
| 1988 | 2.49461 |
| 1987 | 2.53228 |
| 1986 | 2.58355 |
| 1985 | 2.63912 |
| 1984 | 2.69728 |
| 1983 | 2.75735 |
| 1982 | 2.81954 |
| 1981 | 2.88298 |
| 1980 | 2.94641 |
| 1979 | 3.0082 |
| 1978 | 3.06572 |
| 1977 | 3.11832 |
| 1976 | 3.16843 |
| 1975 | 3.19952 |
| 1974 | 3.21252 |
| 1973 | 3.22627 |
| 1972 | 3.24225 |
| 1971 | 3.26323 |
| 1970 | 3.29088 |
| 1969 | 3.32568 |
| 1968 | 3.36884 |
| 1967 | 3.41765 |
| 1966 | 3.46623 |
| 1965 | 3.51117 |
| 1964 | 3.55306 |
| 1963 | 3.59194 |
| 1962 | 3.627 |
| 1961 | 3.65974 |
| 1960 | 3.69092 |