| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.6 |
| 2020 | 4.7 |
| 2019 | 4.8 |
| 2018 | 4.8 |
| 2017 | 4.9 |
| 2016 | 5 |
| 2015 | 5 |
| 2014 | 5 |
| 2013 | 5.1 |
| 2012 | 5.2 |
| 2011 | 5.2 |
| 2010 | 5.3 |
| 2009 | 5.3 |
| 2008 | 5.4 |
| 2007 | 5.5 |
| 2006 | 5.6 |
| 2005 | 5.7 |
| 2004 | 5.9 |
| 2003 | 6.2 |
| 2002 | 6.5 |
| 2001 | 6.9 |
| 2000 | 7.3 |
| 1999 | 7.9 |
| 1998 | 8.5 |
| 1997 | 9.2 |
| 1996 | 9.9 |
| 1995 | 10.8 |
| 1994 | 11.9 |
| 1993 | 13.1 |
| 1992 | 14.5 |
| 1991 | 16.1 |
| 1990 | 17.4 |
| 1989 | 18.6 |
| 1988 | 19.9 |
| 1987 | 21.2 |
| 1986 | 22.6 |
| 1985 | 24.2 |
| 1984 | 26 |
| 1983 | 27.9 |
| 1982 | 30 |
| 1981 | 32.2 |
| 1980 | 34.4 |
| 1979 | 36.7 |
| 1978 | 38.8 |
| 1977 | 40.8 |
| 1976 | 42.7 |
| 1975 | 44.5 |
| 1974 | 46.3 |
| 1973 | 48.1 |
| 1972 | 49.9 |
| 1971 | 51.6 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |