| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 1.02409 |
| 2021 | 1.02473 |
| 2020 | 1.02441 |
| 2019 | 1.02345 |
| 2018 | 1.026 |
| 2017 | 1.03437 |
| 2016 | 1.03579 |
| 2015 | 1.02673 |
| 2014 | 1.01631 |
| 2013 | 1.00263 |
| 2012 | 0.985018 |
| 2011 | 0.964227 |
| 2010 | 0.9399 |
| 2009 | 0.913008 |
| 2008 | 0.886135 |
| 2007 | 0.860878 |
| 2006 | 0.838602 |
| 2005 | 0.816982 |
| 2004 | 0.786671 |
| 2003 | 0.746772 |
| 2002 | 0.703985 |
| 2001 | 0.660187 |
| 2000 | 0.615364 |
| 1999 | 0.570682 |
| 1998 | 0.539144 |
| 1997 | 0.520531 |
| 1996 | 0.5032 |
| 1995 | 0.487477 |
| 1994 | 0.472288 |
| 1993 | 0.458825 |
| 1992 | 0.446165 |
| 1991 | 0.434788 |
| 1990 | 0.424781 |
| 1989 | 0.415365 |
| 1988 | 0.4065 |
| 1987 | 0.398184 |
| 1986 | 0.390451 |
| 1985 | 0.382681 |
| 1984 | 0.375283 |
| 1983 | 0.369152 |
| 1982 | 0.363266 |
| 1981 | 0.357921 |
| 1980 | 0.353285 |
| 1979 | 0.348954 |
| 1978 | 0.344943 |
| 1977 | 0.341681 |
| 1976 | 0.338882 |
| 1975 | 0.334964 |
| 1974 | 0.331773 |
| 1973 | 0.329732 |
| 1972 | 0.327481 |
| 1971 | 0.32592 |
| 1970 | 0.32451 |
| 1969 | 0.322301 |
| 1968 | 0.31948 |
| 1967 | 0.316645 |
| 1966 | 0.314961 |
| 1965 | 0.314176 |
| 1964 | 0.314369 |
| 1963 | 0.31566 |
| 1962 | 0.317839 |
| 1961 | 0.32107 |
| 1960 | 0.324465 |