| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 1.22742 |
| 2021 | -0.505922 |
| 2020 | -1.29825 |
| 2019 | 0.0350068 |
| 2018 | 1.29725 |
| 2017 | 3.21695 |
| 2016 | 4.80413 |
| 2015 | 4.45161 |
| 2014 | 4.92275 |
| 2013 | 7.65039 |
| 2012 | 9.75817 |
| 2011 | 10.6841 |
| 2010 | 6.61155 |
| 2009 | 1.73916 |
| 2008 | 1.72461 |
| 2007 | 1.74406 |
| 2006 | 1.79116 |
| 2005 | 1.85947 |
| 2004 | 1.5205 |
| 2003 | 1.15573 |
| 2002 | 1.21408 |
| 2001 | 1.28845 |
| 2000 | 1.35944 |
| 1999 | 1.43167 |
| 1998 | 1.50883 |
| 1997 | 1.59939 |
| 1996 | 1.70158 |
| 1995 | 1.81119 |
| 1994 | 2.93952 |
| 1993 | 4.27174 |
| 1992 | 4.64157 |
| 1991 | 4.90207 |
| 1990 | 5.15615 |
| 1989 | 5.41923 |
| 1988 | 5.70875 |
| 1987 | 6.04222 |
| 1986 | 6.44954 |
| 1985 | 6.09213 |
| 1984 | 5.54475 |
| 1983 | 5.66323 |
| 1982 | 5.66358 |
| 1981 | 5.55897 |
| 1980 | 5.46487 |
| 1979 | 5.39558 |
| 1978 | 5.24339 |
| 1977 | 4.97593 |
| 1976 | 4.57941 |
| 1975 | 4.21862 |
| 1974 | 3.51678 |
| 1973 | 2.86131 |
| 1972 | 2.75523 |
| 1971 | 2.66438 |
| 1970 | 2.58267 |
| 1969 | 2.51204 |
| 1968 | 2.43568 |
| 1967 | 2.35929 |
| 1966 | 2.28587 |
| 1965 | 2.21082 |
| 1964 | 2.12653 |
| 1963 | 2.03677 |
| 1962 | 1.93848 |
| 1961 | 1.82647 |
| 1960 | - |