| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 1.56302 |
| 2021 | 1.54162 |
| 2020 | 1.5221 |
| 2019 | 1.50468 |
| 2018 | 1.49003 |
| 2017 | 1.47936 |
| 2016 | 1.47201 |
| 2015 | 1.46778 |
| 2014 | 1.47224 |
| 2013 | 1.48856 |
| 2012 | 1.51813 |
| 2011 | 1.55709 |
| 2010 | 1.59399 |
| 2009 | 1.61972 |
| 2008 | 1.63206 |
| 2007 | 1.63089 |
| 2006 | 1.62205 |
| 2005 | 1.61869 |
| 2004 | 1.62033 |
| 2003 | 1.62458 |
| 2002 | 1.63087 |
| 2001 | 1.63536 |
| 2000 | 1.63652 |
| 1999 | 1.63688 |
| 1998 | 1.63681 |
| 1997 | 1.63606 |
| 1996 | 1.63765 |
| 1995 | 1.6448 |
| 1994 | 1.65757 |
| 1993 | 1.67291 |
| 1992 | 1.68997 |
| 1991 | 1.70905 |
| 1990 | 1.73017 |
| 1989 | 1.75287 |
| 1988 | 1.77647 |
| 1987 | 1.80115 |
| 1986 | 1.82675 |
| 1985 | 1.85252 |
| 1984 | 1.87777 |
| 1983 | 1.90246 |
| 1982 | 1.92695 |
| 1981 | 1.95042 |
| 1980 | 1.97239 |
| 1979 | 1.99322 |
| 1978 | 2.01217 |
| 1977 | 2.02948 |
| 1976 | 2.04597 |
| 1975 | 2.0618 |
| 1974 | 2.07694 |
| 1973 | 2.09146 |
| 1972 | 2.10577 |
| 1971 | 2.11939 |
| 1970 | 2.13171 |
| 1969 | 2.14273 |
| 1968 | 2.15323 |
| 1967 | 2.16367 |
| 1966 | 2.17459 |
| 1965 | 2.18658 |
| 1964 | 2.19963 |
| 1963 | 2.21509 |
| 1962 | 2.23161 |
| 1961 | 2.2454 |
| 1960 | 2.2554 |