| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.413148 |
| 2021 | 0.414919 |
| 2020 | 0.417141 |
| 2019 | 0.417608 |
| 2018 | 0.416498 |
| 2017 | 0.415823 |
| 2016 | 0.414483 |
| 2015 | 0.412289 |
| 2014 | 0.409431 |
| 2013 | 0.405844 |
| 2012 | 0.401775 |
| 2011 | 0.398038 |
| 2010 | 0.395128 |
| 2009 | 0.392585 |
| 2008 | 0.389753 |
| 2007 | 0.386961 |
| 2006 | 0.384721 |
| 2005 | 0.382974 |
| 2004 | 0.381504 |
| 2003 | 0.380326 |
| 2002 | 0.379306 |
| 2001 | 0.37843 |
| 2000 | 0.377909 |
| 1999 | 0.377806 |
| 1998 | 0.377976 |
| 1997 | 0.378366 |
| 1996 | 0.379086 |
| 1995 | 0.380392 |
| 1994 | 0.382439 |
| 1993 | 0.384912 |
| 1992 | 0.387615 |
| 1991 | 0.390573 |
| 1990 | 0.393549 |
| 1989 | 0.396523 |
| 1988 | 0.399697 |
| 1987 | 0.403008 |
| 1986 | 0.406947 |
| 1985 | 0.410847 |
| 1984 | 0.413906 |
| 1983 | 0.416714 |
| 1982 | 0.419462 |
| 1981 | 0.422266 |
| 1980 | 0.425287 |
| 1979 | 0.428887 |
| 1978 | 0.433136 |
| 1977 | 0.437805 |
| 1976 | 0.442218 |
| 1975 | 0.445506 |
| 1974 | 0.447287 |
| 1973 | 0.4473 |
| 1972 | 0.446038 |
| 1971 | 0.445498 |
| 1970 | 0.447536 |
| 1969 | 0.45252 |
| 1968 | 0.461759 |
| 1967 | 0.475178 |
| 1966 | 0.489807 |
| 1965 | 0.503563 |
| 1964 | 0.5163 |
| 1963 | 0.528856 |
| 1962 | 0.540355 |
| 1961 | 0.550519 |
| 1960 | 0.560817 |