| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 3.4564 |
| 2021 | 3.36472 |
| 2020 | 3.28323 |
| 2019 | 3.20941 |
| 2018 | 3.14273 |
| 2017 | 3.0792 |
| 2016 | 3.01643 |
| 2015 | 2.95466 |
| 2014 | 2.89387 |
| 2013 | 2.83224 |
| 2012 | 2.76986 |
| 2011 | 2.71266 |
| 2010 | 2.66323 |
| 2009 | 2.61948 |
| 2008 | 2.58097 |
| 2007 | 2.54662 |
| 2006 | 2.51461 |
| 2005 | 2.48728 |
| 2004 | 2.46839 |
| 2003 | 2.45813 |
| 2002 | 2.45358 |
| 2001 | 2.45323 |
| 2000 | 2.45689 |
| 1999 | 2.47965 |
| 1998 | 2.5261 |
| 1997 | 2.59393 |
| 1996 | 2.67985 |
| 1995 | 2.76821 |
| 1994 | 2.83834 |
| 1993 | 2.88512 |
| 1992 | 2.91394 |
| 1991 | 2.93085 |
| 1990 | 2.95682 |
| 1989 | 2.99282 |
| 1988 | 3.03549 |
| 1987 | 3.08263 |
| 1986 | 3.1288 |
| 1985 | 3.16825 |
| 1984 | 3.20257 |
| 1983 | 3.23587 |
| 1982 | 3.26709 |
| 1981 | 3.30004 |
| 1980 | 3.33693 |
| 1979 | 3.37488 |
| 1978 | 3.40948 |
| 1977 | 3.44211 |
| 1976 | 3.47578 |
| 1975 | 3.51073 |
| 1974 | 3.54538 |
| 1973 | 3.57867 |
| 1972 | 3.61109 |
| 1971 | 3.64199 |
| 1970 | 3.67108 |
| 1969 | 3.69828 |
| 1968 | 3.72399 |
| 1967 | 3.74874 |
| 1966 | 3.77183 |
| 1965 | 3.7927 |
| 1964 | 3.81177 |
| 1963 | 3.82968 |
| 1962 | 3.84594 |
| 1961 | 3.85955 |
| 1960 | 3.87021 |