| 年份 | 阿曼 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0182746 |
| 2020 | 0.0164326 |
| 2019 | 0.0169116 |
| 2018 | 0.016661 |
| 2017 | 0.0152581 |
| 2016 | 0.0127579 |
| 2015 | 0.0124434 |
| 2014 | 0.00935333 |
| 2013 | 0.00987769 |
| 2012 | 0.00953168 |
| 2011 | 0.0115065 |
| 2010 | 0.0119018 |
| 2009 | 0.0137162 |
| 2008 | 0.0113164 |
| 2007 | 0.0107457 |
| 2006 | 0.0101537 |
| 2005 | 0.0111324 |
| 2004 | 0.0117463 |
| 2003 | 0.0127488 |
| 2002 | 0.012897 |
| 2001 | 0.0130545 |
| 2000 | 0.0132238 |
| 1999 | 0.0134048 |
| 1998 | 0.0135981 |
| 1997 | 0.0129142 |
| 1996 | 0.0126699 |
| 1995 | 0.0128874 |
| 1994 | 0.0135916 |
| 1993 | 0.013997 |
| 1992 | 0.0176302 |
| 1991 | 0.0184678 |
| 1990 | 0.0193957 |
| 1989 | 0.020422 |
| 1988 | 0.0203273 |
| 1987 | 0.0215215 |
| 1986 | 0.0221692 |
| 1985 | 0.0214293 |
| 1984 | 0.0212046 |
| 1983 | 0.0224136 |
| 1982 | 0.0202056 |
| 1981 | 0.0213829 |
| 1980 | 0.0226053 |
| 1979 | 0.023875 |
| 1978 | 0.0251986 |
| 1977 | 0.0265551 |
| 1976 | 0.0279099 |
| 1975 | 0.0292177 |
| 1974 | 0.0304767 |
| 1973 | 0.0315675 |
| 1972 | 0.0324838 |
| 1971 | 0.0319395 |
| 1970 | 0.0328019 |
| 1969 | 0.0336601 |
| 1968 | 0.0345164 |
| 1967 | 0.0321522 |
| 1966 | 0.0329198 |
| 1965 | 0.0336809 |
| 1964 | 0.0344338 |
| 1963 | 0.0351739 |
| 1962 | 0.0358977 |
| 1961 | 0.0366003 |
| 1960 | - |