| 年份 | 也门共和国  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 2.70181 | 
| 2021 | 2.65108 | 
| 2020 | 2.60171 | 
| 2019 | 2.55364 | 
| 2018 | 2.50475 | 
| 2017 | 2.4549 | 
| 2016 | 2.40929 | 
| 2015 | 2.36996 | 
| 2014 | 2.335 | 
| 2013 | 2.3045 | 
| 2012 | 2.27738 | 
| 2011 | 2.25146 | 
| 2010 | 2.22845 | 
| 2009 | 2.21035 | 
| 2008 | 2.19809 | 
| 2007 | 2.19146 | 
| 2006 | 2.18959 | 
| 2005 | 2.19174 | 
| 2004 | 2.20626 | 
| 2003 | 2.23791 | 
| 2002 | 2.28809 | 
| 2001 | 2.35138 | 
| 2000 | 2.4117 | 
| 1999 | 2.45642 | 
| 1998 | 2.48166 | 
| 1997 | 2.48736 | 
| 1996 | 2.48253 | 
| 1995 | 2.48922 | 
| 1994 | 2.50983 | 
| 1993 | 2.53903 | 
| 1992 | 2.57393 | 
| 1991 | 2.60707 | 
| 1990 | 2.63466 | 
| 1989 | 2.66005 | 
| 1988 | 2.68458 | 
| 1987 | 2.70802 | 
| 1986 | 2.73465 | 
| 1985 | 2.76616 | 
| 1984 | 2.7994 | 
| 1983 | 2.83194 | 
| 1982 | 2.86471 | 
| 1981 | 2.89827 | 
| 1980 | 2.93268 | 
| 1979 | 2.96716 | 
| 1978 | 2.99976 | 
| 1977 | 3.03039 | 
| 1976 | 3.05976 | 
| 1975 | 3.08753 | 
| 1974 | 3.11345 | 
| 1973 | 3.13769 | 
| 1972 | 3.16073 | 
| 1971 | 3.18203 | 
| 1970 | 3.20092 | 
| 1969 | 3.21735 | 
| 1968 | 3.23164 | 
| 1967 | 3.24433 | 
| 1966 | 3.25566 | 
| 1965 | 3.26555 | 
| 1964 | 3.27416 | 
| 1963 | 3.28177 | 
| 1962 | 3.28842 | 
| 1961 | 3.29391 | 
| 1960 | 3.29791 |