| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 2.53542 |
| 2021 | 2.49923 |
| 2020 | 2.49346 |
| 2019 | 2.48899 |
| 2018 | 2.46814 |
| 2017 | 2.46664 |
| 2016 | 2.51905 |
| 2015 | 2.58416 |
| 2014 | 2.56758 |
| 2013 | 2.44844 |
| 2012 | 2.27685 |
| 2011 | 2.1164 |
| 2010 | 2.03666 |
| 2009 | 2.03568 |
| 2008 | 2.05653 |
| 2007 | 2.07329 |
| 2006 | 2.07415 |
| 2005 | 2.05541 |
| 2004 | 2.0275 |
| 2003 | 2.04642 |
| 2002 | 2.10968 |
| 2001 | 2.15858 |
| 2000 | 2.18643 |
| 1999 | 2.19303 |
| 1998 | 2.18188 |
| 1997 | 2.1577 |
| 1996 | 2.12423 |
| 1995 | 2.08413 |
| 1994 | 2.03898 |
| 1993 | 1.97278 |
| 1992 | 1.89407 |
| 1991 | 1.83309 |
| 1990 | 1.7919 |
| 1989 | 1.77131 |
| 1988 | 1.77118 |
| 1987 | 1.79289 |
| 1986 | 1.83899 |
| 1985 | 1.91151 |
| 1984 | 1.96891 |
| 1983 | 1.99743 |
| 1982 | 2.03174 |
| 1981 | 2.06902 |
| 1980 | 2.10841 |
| 1979 | 2.1475 |
| 1978 | 2.1854 |
| 1977 | 2.22264 |
| 1976 | 2.26063 |
| 1975 | 2.30138 |
| 1974 | 2.34493 |
| 1973 | 2.3885 |
| 1972 | 2.4308 |
| 1971 | 2.47076 |
| 1970 | 2.50661 |
| 1969 | 2.53961 |
| 1968 | 2.56913 |
| 1967 | 2.59596 |
| 1966 | 2.62221 |
| 1965 | 2.64627 |
| 1964 | 2.66654 |
| 1963 | 2.68234 |
| 1962 | 2.69295 |
| 1961 | 2.69982 |
| 1960 | 2.70392 |