| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | 3.15289 |
| 2021 | 3.06408 |
| 2020 | 2.99272 |
| 2019 | 2.93924 |
| 2018 | 2.93035 |
| 2017 | 2.93946 |
| 2016 | 2.94176 |
| 2015 | 2.95209 |
| 2014 | 2.99162 |
| 2013 | 3.00928 |
| 2012 | 2.98637 |
| 2011 | 2.95073 |
| 2010 | 2.89187 |
| 2009 | 2.79202 |
| 2008 | 2.67653 |
| 2007 | 2.57307 |
| 2006 | 2.49131 |
| 2005 | 2.43257 |
| 2004 | 2.38368 |
| 2003 | 2.34895 |
| 2002 | 2.33623 |
| 2001 | 2.33214 |
| 2000 | 2.32907 |
| 1999 | 2.32416 |
| 1998 | 2.31657 |
| 1997 | 2.30666 |
| 1996 | 2.29497 |
| 1995 | 2.28332 |
| 1994 | 2.27579 |
| 1993 | 2.28071 |
| 1992 | 2.30006 |
| 1991 | 2.32782 |
| 1990 | 2.35923 |
| 1989 | 2.39074 |
| 1988 | 2.42092 |
| 1987 | 2.4512 |
| 1986 | 2.48616 |
| 1985 | 2.53041 |
| 1984 | 2.56798 |
| 1983 | 2.59528 |
| 1982 | 2.6284 |
| 1981 | 2.6676 |
| 1980 | 2.71233 |
| 1979 | 2.76131 |
| 1978 | 2.81293 |
| 1977 | 2.86621 |
| 1976 | 2.91967 |
| 1975 | 2.97179 |
| 1974 | 3.02247 |
| 1973 | 3.06761 |
| 1972 | 3.10644 |
| 1971 | 3.14389 |
| 1970 | 3.18037 |
| 1969 | 3.21607 |
| 1968 | 3.25196 |
| 1967 | 3.28729 |
| 1966 | 3.31888 |
| 1965 | 3.34467 |
| 1964 | 3.36475 |
| 1963 | 3.37918 |
| 1962 | 3.3876 |
| 1961 | 3.3924 |
| 1960 | 3.39507 |