| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 1.5811 |
| 2021 | 1.57895 |
| 2020 | 1.60647 |
| 2019 | 1.55442 |
| 2018 | 1.46126 |
| 2017 | 1.33932 |
| 2016 | 1.2394 |
| 2015 | 1.20632 |
| 2014 | 1.19606 |
| 2013 | 1.1847 |
| 2012 | 1.19217 |
| 2011 | 1.24085 |
| 2010 | 1.32205 |
| 2009 | 1.36477 |
| 2008 | 1.35574 |
| 2007 | 1.35044 |
| 2006 | 1.35689 |
| 2005 | 1.37246 |
| 2004 | 1.38482 |
| 2003 | 1.41029 |
| 2002 | 1.44648 |
| 2001 | 1.46663 |
| 2000 | 1.47247 |
| 1999 | 1.46634 |
| 1998 | 1.45168 |
| 1997 | 1.43115 |
| 1996 | 1.40502 |
| 1995 | 1.37496 |
| 1994 | 1.34379 |
| 1993 | 1.31143 |
| 1992 | 1.28475 |
| 1991 | 1.27295 |
| 1990 | 1.27515 |
| 1989 | 1.29054 |
| 1988 | 1.31924 |
| 1987 | 1.36074 |
| 1986 | 1.41532 |
| 1985 | 1.48497 |
| 1984 | 1.53619 |
| 1983 | 1.5585 |
| 1982 | 1.58304 |
| 1981 | 1.61043 |
| 1980 | 1.64186 |
| 1979 | 1.67827 |
| 1978 | 1.72012 |
| 1977 | 1.76615 |
| 1976 | 1.81259 |
| 1975 | 1.8566 |
| 1974 | 1.89759 |
| 1973 | 1.93165 |
| 1972 | 1.95965 |
| 1971 | 1.98608 |
| 1970 | 2.01066 |
| 1969 | 2.03242 |
| 1968 | 2.05054 |
| 1967 | 2.06548 |
| 1966 | 2.07806 |
| 1965 | 2.08922 |
| 1964 | 2.09897 |
| 1963 | 2.10812 |
| 1962 | 2.11531 |
| 1961 | 2.11639 |
| 1960 | 2.10965 |