| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 6.36148 |
| 2021 | 6.19618 |
| 2020 | 6.02599 |
| 2019 | 5.85207 |
| 2018 | 5.66944 |
| 2017 | 5.4854 |
| 2016 | 5.31246 |
| 2015 | 5.14995 |
| 2014 | 4.99784 |
| 2013 | 4.86595 |
| 2012 | 4.75629 |
| 2011 | 4.66049 |
| 2010 | 4.5773 |
| 2009 | 4.50647 |
| 2008 | 4.44704 |
| 2007 | 4.39191 |
| 2006 | 4.33767 |
| 2005 | 4.28614 |
| 2004 | 4.24254 |
| 2003 | 4.20117 |
| 2002 | 4.15483 |
| 2001 | 4.11167 |
| 2000 | 4.07629 |
| 1999 | 4.04673 |
| 1998 | 4.02279 |
| 1997 | 4.00353 |
| 1996 | 3.98653 |
| 1995 | 3.97566 |
| 1994 | 3.96977 |
| 1993 | 3.97041 |
| 1992 | 3.98282 |
| 1991 | 4.00443 |
| 1990 | 4.0345 |
| 1989 | 4.08846 |
| 1988 | 4.17588 |
| 1987 | 4.29907 |
| 1986 | 4.44861 |
| 1985 | 4.5953 |
| 1984 | 4.71402 |
| 1983 | 4.79764 |
| 1982 | 4.84378 |
| 1981 | 4.86647 |
| 1980 | 4.90276 |
| 1979 | 4.95408 |
| 1978 | 5.01153 |
| 1977 | 5.07137 |
| 1976 | 5.12155 |
| 1975 | 5.15526 |
| 1974 | 5.17931 |
| 1973 | 5.19659 |
| 1972 | 5.20772 |
| 1971 | 5.22039 |
| 1970 | 5.23807 |
| 1969 | 5.25646 |
| 1968 | 5.27122 |
| 1967 | 5.28467 |
| 1966 | 5.29877 |
| 1965 | 5.31305 |
| 1964 | 5.32636 |
| 1963 | 5.33658 |
| 1962 | 5.34424 |
| 1961 | 5.35146 |
| 1960 | 5.3572 |