| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.597709 |
| 2021 | 0.595992 |
| 2020 | 0.595616 |
| 2019 | 0.595167 |
| 2018 | 0.59419 |
| 2017 | 0.594112 |
| 2016 | 0.593389 |
| 2015 | 0.591328 |
| 2014 | 0.588341 |
| 2013 | 0.584469 |
| 2012 | 0.579914 |
| 2011 | 0.5758 |
| 2010 | 0.572714 |
| 2009 | 0.570065 |
| 2008 | 0.567397 |
| 2007 | 0.565008 |
| 2006 | 0.563221 |
| 2005 | 0.562071 |
| 2004 | 0.560913 |
| 2003 | 0.559514 |
| 2002 | 0.558137 |
| 2001 | 0.557128 |
| 2000 | 0.556713 |
| 1999 | 0.556878 |
| 1998 | 0.557506 |
| 1997 | 0.558448 |
| 1996 | 0.559697 |
| 1995 | 0.561835 |
| 1994 | 0.565291 |
| 1993 | 0.56947 |
| 1992 | 0.573845 |
| 1991 | 0.578391 |
| 1990 | 0.583145 |
| 1989 | 0.588109 |
| 1988 | 0.593121 |
| 1987 | 0.598467 |
| 1986 | 0.604137 |
| 1985 | 0.609769 |
| 1984 | 0.615165 |
| 1983 | 0.620268 |
| 1982 | 0.62566 |
| 1981 | 0.631317 |
| 1980 | 0.63702 |
| 1979 | 0.643103 |
| 1978 | 0.649648 |
| 1977 | 0.656544 |
| 1976 | 0.663058 |
| 1975 | 0.668623 |
| 1974 | 0.673296 |
| 1973 | 0.676632 |
| 1972 | 0.679114 |
| 1971 | 0.682713 |
| 1970 | 0.68838 |
| 1969 | 0.696136 |
| 1968 | 0.707763 |
| 1967 | 0.722919 |
| 1966 | 0.738195 |
| 1965 | 0.752222 |
| 1964 | 0.765004 |
| 1963 | 0.776577 |
| 1962 | 0.785499 |
| 1961 | 0.791063 |
| 1960 | 0.795018 |