| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 3.796 |
| 2020 | 3.025 |
| 2019 | 2.205 |
| 2018 | 2.172 |
| 2017 | 2.155 |
| 2016 | 2.154 |
| 2015 | 2.205 |
| 2014 | 2.243 |
| 2013 | 2.278 |
| 2012 | 2.323 |
| 2011 | 2.457 |
| 2010 | 2.585 |
| 2009 | 2.991 |
| 2008 | 2.973 |
| 2007 | 2.976 |
| 2006 | 2.928 |
| 2005 | 2.914 |
| 2004 | 2.896 |
| 2003 | 2.959 |
| 2002 | 3.041 |
| 2001 | 3.063 |
| 2000 | 3.156 |
| 1999 | 3.234 |
| 1998 | 3.285 |
| 1997 | 3.435 |
| 1996 | 3.494 |
| 1995 | 3.549 |
| 1994 | 3.73 |
| 1993 | 3.836 |
| 1992 | 4.054 |
| 1991 | 4.292 |
| 1990 | 4.541 |
| 1989 | 4.894 |
| 1988 | 5.279 |
| 1987 | 5.755 |
| 1986 | 6.358 |
| 1985 | 6.982 |
| 1984 | 7.627 |
| 1983 | 8.314 |
| 1982 | 9.1 |
| 1981 | 9.924 |
| 1980 | 10.702 |
| 1979 | 11.538 |
| 1978 | 12.446 |
| 1977 | 13.4 |
| 1976 | 14.092 |
| 1975 | 15.205 |
| 1974 | 16.007 |
| 1973 | 16.864 |
| 1972 | 17.776 |
| 1971 | 18.404 |
| 1970 | 19.385 |
| 1969 | 20.244 |
| 1968 | 21.249 |
| 1967 | 22.331 |
| 1966 | 23.422 |
| 1965 | 24.507 |
| 1964 | 25.621 |
| 1963 | 26.782 |
| 1962 | 27.925 |
| 1961 | 29.199 |
| 1960 | 30.49 |