| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 13.8624 |
| 2021 | 14.0929 |
| 2020 | 14.3056 |
| 2019 | 14.5192 |
| 2018 | 14.7342 |
| 2017 | 14.9357 |
| 2016 | 15.1188 |
| 2015 | 15.277 |
| 2014 | 15.4169 |
| 2013 | 15.5559 |
| 2012 | 15.7028 |
| 2011 | 15.8577 |
| 2010 | 16.0072 |
| 2009 | 16.1398 |
| 2008 | 16.259 |
| 2007 | 16.3585 |
| 2006 | 16.4476 |
| 2005 | 16.5675 |
| 2004 | 16.7253 |
| 2003 | 16.8916 |
| 2002 | 17.0943 |
| 2001 | 17.3419 |
| 2000 | 17.666 |
| 1999 | 18.0762 |
| 1998 | 18.5296 |
| 1997 | 18.9931 |
| 1996 | 19.4269 |
| 1995 | 19.7675 |
| 1994 | 20.0095 |
| 1993 | 20.2142 |
| 1992 | 20.3842 |
| 1991 | 20.5295 |
| 1990 | 20.6487 |
| 1989 | 20.734 |
| 1988 | 20.7795 |
| 1987 | 20.7907 |
| 1986 | 20.7674 |
| 1985 | 20.7075 |
| 1984 | 20.6168 |
| 1983 | 20.4722 |
| 1982 | 20.2883 |
| 1981 | 20.0971 |
| 1980 | 19.8911 |
| 1979 | 19.6696 |
| 1978 | 19.466 |
| 1977 | 19.2938 |
| 1976 | 19.1294 |
| 1975 | 18.9674 |
| 1974 | 18.8094 |
| 1973 | 18.6596 |
| 1972 | 18.5025 |
| 1971 | 18.3306 |
| 1970 | 18.148 |
| 1969 | 17.9608 |
| 1968 | 17.763 |
| 1967 | 17.5516 |
| 1966 | 17.3474 |
| 1965 | 17.1612 |
| 1964 | 16.9846 |
| 1963 | 16.8227 |
| 1962 | 16.6667 |
| 1961 | 16.4993 |
| 1960 | 16.3395 |