| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 4.11566 |
| 2021 | 3.98131 |
| 2020 | 3.90622 |
| 2019 | 3.80181 |
| 2018 | 3.69608 |
| 2017 | 3.59678 |
| 2016 | 3.55283 |
| 2015 | 3.57414 |
| 2014 | 3.61563 |
| 2013 | 3.63298 |
| 2012 | 3.61282 |
| 2011 | 3.58296 |
| 2010 | 3.53847 |
| 2009 | 3.45903 |
| 2008 | 3.37096 |
| 2007 | 3.28576 |
| 2006 | 3.21834 |
| 2005 | 3.17043 |
| 2004 | 3.12424 |
| 2003 | 3.11654 |
| 2002 | 3.16434 |
| 2001 | 3.21499 |
| 2000 | 3.25198 |
| 1999 | 3.27312 |
| 1998 | 3.27607 |
| 1997 | 3.26015 |
| 1996 | 3.22428 |
| 1995 | 3.16917 |
| 1994 | 3.09861 |
| 1993 | 2.97188 |
| 1992 | 2.80617 |
| 1991 | 2.67212 |
| 1990 | 2.56998 |
| 1989 | 2.49565 |
| 1988 | 2.44675 |
| 1987 | 2.42374 |
| 1986 | 2.43073 |
| 1985 | 2.47358 |
| 1984 | 2.50661 |
| 1983 | 2.50919 |
| 1982 | 2.52052 |
| 1981 | 2.54219 |
| 1980 | 2.57235 |
| 1979 | 2.60986 |
| 1978 | 2.65512 |
| 1977 | 2.70504 |
| 1976 | 2.75561 |
| 1975 | 2.80534 |
| 1974 | 2.85102 |
| 1973 | 2.89013 |
| 1972 | 2.92287 |
| 1971 | 2.95298 |
| 1970 | 2.98496 |
| 1969 | 3.02108 |
| 1968 | 3.06152 |
| 1967 | 3.10457 |
| 1966 | 3.14564 |
| 1965 | 3.18246 |
| 1964 | 3.21519 |
| 1963 | 3.2434 |
| 1962 | 3.26826 |
| 1961 | 3.29037 |
| 1960 | 3.30858 |