| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 0.615438 |
| 2021 | 0.611293 |
| 2020 | 0.594445 |
| 2019 | 0.568092 |
| 2018 | 0.55774 |
| 2017 | 0.55878 |
| 2016 | 0.573136 |
| 2015 | 0.581233 |
| 2014 | 0.578342 |
| 2013 | 0.576688 |
| 2012 | 0.590159 |
| 2011 | 0.631446 |
| 2010 | 0.694481 |
| 2009 | 0.715393 |
| 2008 | 0.67851 |
| 2007 | 0.642457 |
| 2006 | 0.616059 |
| 2005 | 0.60151 |
| 2004 | 0.595508 |
| 2003 | 0.600162 |
| 2002 | 0.610662 |
| 2001 | 0.616915 |
| 2000 | 0.619862 |
| 1999 | 0.619946 |
| 1998 | 0.618785 |
| 1997 | 0.61778 |
| 1996 | 0.615405 |
| 1995 | 0.610381 |
| 1994 | 0.602081 |
| 1993 | 0.596267 |
| 1992 | 0.59659 |
| 1991 | 0.600059 |
| 1990 | 0.607381 |
| 1989 | 0.619913 |
| 1988 | 0.638382 |
| 1987 | 0.663408 |
| 1986 | 0.694968 |
| 1985 | 0.732785 |
| 1984 | 0.761534 |
| 1983 | 0.77719 |
| 1982 | 0.794607 |
| 1981 | 0.81369 |
| 1980 | 0.833972 |
| 1979 | 0.854186 |
| 1978 | 0.874592 |
| 1977 | 0.89518 |
| 1976 | 0.914464 |
| 1975 | 0.931981 |
| 1974 | 0.948131 |
| 1973 | 0.961775 |
| 1972 | 0.972829 |
| 1971 | 0.98142 |
| 1970 | 0.985939 |
| 1969 | 0.986826 |
| 1968 | 0.983686 |
| 1967 | 0.976881 |
| 1966 | 0.969672 |
| 1965 | 0.964332 |
| 1964 | 0.961082 |
| 1963 | 0.960199 |
| 1962 | 0.961652 |
| 1961 | 0.963935 |
| 1960 | 0.964571 |