| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 0.55006 |
| 2021 | 0.574941 |
| 2020 | 0.602224 |
| 2019 | 0.610345 |
| 2018 | 0.599894 |
| 2017 | 0.584526 |
| 2016 | 0.568082 |
| 2015 | 0.554057 |
| 2014 | 0.544152 |
| 2013 | 0.538494 |
| 2012 | 0.539285 |
| 2011 | 0.548242 |
| 2010 | 0.561077 |
| 2009 | 0.560128 |
| 2008 | 0.543913 |
| 2007 | 0.528623 |
| 2006 | 0.517756 |
| 2005 | 0.511264 |
| 2004 | 0.508055 |
| 2003 | 0.507099 |
| 2002 | 0.506582 |
| 2001 | 0.502331 |
| 2000 | 0.49301 |
| 1999 | 0.480222 |
| 1998 | 0.467522 |
| 1997 | 0.458393 |
| 1996 | 0.451361 |
| 1995 | 0.444936 |
| 1994 | 0.440192 |
| 1993 | 0.43741 |
| 1992 | 0.434904 |
| 1991 | 0.430688 |
| 1990 | 0.424539 |
| 1989 | 0.417152 |
| 1988 | 0.409208 |
| 1987 | 0.400931 |
| 1986 | 0.392935 |
| 1985 | 0.385538 |
| 1984 | 0.381766 |
| 1983 | 0.381794 |
| 1982 | 0.381914 |
| 1981 | 0.382713 |
| 1980 | 0.384447 |
| 1979 | 0.385586 |
| 1978 | 0.385846 |
| 1977 | 0.38567 |
| 1976 | 0.385436 |
| 1975 | 0.386006 |
| 1974 | 0.387507 |
| 1973 | 0.388938 |
| 1972 | 0.389011 |
| 1971 | 0.388469 |
| 1970 | 0.387654 |
| 1969 | 0.386522 |
| 1968 | 0.384808 |
| 1967 | 0.382315 |
| 1966 | 0.379851 |
| 1965 | 0.377304 |
| 1964 | 0.374512 |
| 1963 | 0.37112 |
| 1962 | 0.367287 |
| 1961 | 0.362619 |
| 1960 | 0.357258 |