| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 0.586831 |
| 2021 | 0.583157 |
| 2020 | 0.608407 |
| 2019 | 0.639277 |
| 2018 | 0.652968 |
| 2017 | 0.650911 |
| 2016 | 0.640614 |
| 2015 | 0.6254 |
| 2014 | 0.607203 |
| 2013 | 0.586611 |
| 2012 | 0.555226 |
| 2011 | 0.510863 |
| 2010 | 0.471223 |
| 2009 | 0.465534 |
| 2008 | 0.485682 |
| 2007 | 0.498044 |
| 2006 | 0.495477 |
| 2005 | 0.478582 |
| 2004 | 0.454623 |
| 2003 | 0.449858 |
| 2002 | 0.468067 |
| 2001 | 0.487211 |
| 2000 | 0.503405 |
| 1999 | 0.516226 |
| 1998 | 0.523358 |
| 1997 | 0.523886 |
| 1996 | 0.519659 |
| 1995 | 0.512176 |
| 1994 | 0.503312 |
| 1993 | 0.505423 |
| 1992 | 0.520162 |
| 1991 | 0.536122 |
| 1990 | 0.551162 |
| 1989 | 0.563587 |
| 1988 | 0.572312 |
| 1987 | 0.577549 |
| 1986 | 0.579488 |
| 1985 | 0.578462 |
| 1984 | 0.57985 |
| 1983 | 0.585742 |
| 1982 | 0.592489 |
| 1981 | 0.599507 |
| 1980 | 0.606475 |
| 1979 | 0.613485 |
| 1978 | 0.620939 |
| 1977 | 0.627716 |
| 1976 | 0.632373 |
| 1975 | 0.634661 |
| 1974 | 0.634547 |
| 1973 | 0.629761 |
| 1972 | 0.620922 |
| 1971 | 0.612525 |
| 1970 | 0.605998 |
| 1969 | 0.601274 |
| 1968 | 0.598782 |
| 1967 | 0.598713 |
| 1966 | 0.599002 |
| 1965 | 0.597721 |
| 1964 | 0.595635 |
| 1963 | 0.593052 |
| 1962 | 0.588342 |
| 1961 | 0.58265 |
| 1960 | 0.577785 |