| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 13.3056 |
| 2021 | 13.1482 |
| 2020 | 12.9779 |
| 2019 | 12.8578 |
| 2018 | 12.5625 |
| 2017 | 12.1369 |
| 2016 | 11.6511 |
| 2015 | 11.1388 |
| 2014 | 10.65 |
| 2013 | 10.1599 |
| 2012 | 9.61166 |
| 2011 | 9.1033 |
| 2010 | 8.70611 |
| 2009 | 8.41746 |
| 2008 | 8.23935 |
| 2007 | 8.09374 |
| 2006 | 7.99257 |
| 2005 | 7.95304 |
| 2004 | 7.98348 |
| 2003 | 7.93539 |
| 2002 | 7.78562 |
| 2001 | 7.69079 |
| 2000 | 7.67086 |
| 1999 | 7.71216 |
| 1998 | 7.79476 |
| 1997 | 7.90437 |
| 1996 | 8.03385 |
| 1995 | 8.17551 |
| 1994 | 8.32123 |
| 1993 | 8.233 |
| 1992 | 7.87296 |
| 1991 | 7.47502 |
| 1990 | 7.06551 |
| 1989 | 6.64223 |
| 1988 | 6.21314 |
| 1987 | 5.82644 |
| 1986 | 5.5156 |
| 1985 | 5.28577 |
| 1984 | 5.2224 |
| 1983 | 5.28308 |
| 1982 | 5.28319 |
| 1981 | 5.21137 |
| 1980 | 5.12141 |
| 1979 | 5.02867 |
| 1978 | 4.94192 |
| 1977 | 4.86929 |
| 1976 | 4.81237 |
| 1975 | 4.77193 |
| 1974 | 4.74715 |
| 1973 | 4.74926 |
| 1972 | 4.77059 |
| 1971 | 4.79178 |
| 1970 | 4.81887 |
| 1969 | 4.85149 |
| 1968 | 4.88548 |
| 1967 | 4.92652 |
| 1966 | 4.97802 |
| 1965 | 5.03573 |
| 1964 | 5.099 |
| 1963 | 5.16801 |
| 1962 | 5.23526 |
| 1961 | 5.29471 |
| 1960 | 5.34525 |