| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | 0.548269 |
| 2019 | 0.560357 |
| 2018 | 0.290084 |
| 2017 | 0.601313 |
| 2016 | 0.312331 |
| 2015 | 0.324992 |
| 2014 | 0.339969 |
| 2013 | 2.38684 |
| 2012 | 2.4291 |
| 2011 | 2.47017 |
| 2010 | 2.51125 |
| 2009 | 2.58725 |
| 2008 | 2.66851 |
| 2007 | 2.7507 |
| 2006 | 2.8348 |
| 2005 | 2.91732 |
| 2004 | 2.94694 |
| 2003 | 3.02568 |
| 2002 | 3.08272 |
| 2001 | 2.85529 |
| 2000 | 3.19814 |
| 1999 | 3.25664 |
| 1998 | 3.40269 |
| 1997 | 3.8129 |
| 1996 | 3.04558 |
| 1995 | 1.97268 |
| 1994 | 2.04957 |
| 1993 | 1.97483 |
| 1992 | 2.0529 |
| 1991 | 4.22007 |
| 1990 | 4.37153 |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |