| 年份 | 也门共和国 |
|---|---|
| 2023 | - |
| 2022 | 1.89014 |
| 2021 | 1.84648 |
| 2020 | 1.80854 |
| 2019 | 1.77288 |
| 2018 | 1.73943 |
| 2017 | 1.70896 |
| 2016 | 1.67997 |
| 2015 | 1.65425 |
| 2014 | 1.63286 |
| 2013 | 1.61598 |
| 2012 | 1.60359 |
| 2011 | 1.59473 |
| 2010 | 1.58861 |
| 2009 | 1.59487 |
| 2008 | 1.6169 |
| 2007 | 1.65329 |
| 2006 | 1.70179 |
| 2005 | 1.75052 |
| 2004 | 1.78473 |
| 2003 | 1.8018 |
| 2002 | 1.80507 |
| 2001 | 1.79931 |
| 2000 | 1.79933 |
| 1999 | 1.80606 |
| 1998 | 1.81652 |
| 1997 | 1.82958 |
| 1996 | 1.8411 |
| 1995 | 1.85062 |
| 1994 | 1.86185 |
| 1993 | 1.87428 |
| 1992 | 1.88673 |
| 1991 | 1.90171 |
| 1990 | 1.92028 |
| 1989 | 1.94068 |
| 1988 | 1.96149 |
| 1987 | 1.9836 |
| 1986 | 2.0094 |
| 1985 | 2.03772 |
| 1984 | 2.06605 |
| 1983 | 2.09507 |
| 1982 | 2.12434 |
| 1981 | 2.15314 |
| 1980 | 2.18142 |
| 1979 | 2.2093 |
| 1978 | 2.23575 |
| 1977 | 2.26083 |
| 1976 | 2.2856 |
| 1975 | 2.3097 |
| 1974 | 2.33281 |
| 1973 | 2.35531 |
| 1972 | 2.37777 |
| 1971 | 2.39965 |
| 1970 | 2.42028 |
| 1969 | 2.43974 |
| 1968 | 2.45899 |
| 1967 | 2.47805 |
| 1966 | 2.49534 |
| 1965 | 2.51002 |
| 1964 | 2.52213 |
| 1963 | 2.53199 |
| 1962 | 2.54005 |
| 1961 | 2.54774 |
| 1960 | 2.55655 |