| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 1.1968 |
| 2021 | 1.20278 |
| 2020 | 1.21868 |
| 2019 | 1.24391 |
| 2018 | 1.27788 |
| 2017 | 1.31844 |
| 2016 | 1.29868 |
| 2015 | 1.21622 |
| 2014 | 1.13808 |
| 2013 | 1.06562 |
| 2012 | 0.999267 |
| 2011 | 0.940519 |
| 2010 | 0.891672 |
| 2009 | 0.85481 |
| 2008 | 0.829055 |
| 2007 | 0.812866 |
| 2006 | 0.805838 |
| 2005 | 0.786886 |
| 2004 | 0.72468 |
| 2003 | 0.640482 |
| 2002 | 0.565164 |
| 2001 | 0.498541 |
| 2000 | 0.441586 |
| 1999 | 0.394128 |
| 1998 | 0.366408 |
| 1997 | 0.354503 |
| 1996 | 0.342748 |
| 1995 | 0.332294 |
| 1994 | 0.322337 |
| 1993 | 0.312408 |
| 1992 | 0.303022 |
| 1991 | 0.295653 |
| 1990 | 0.287884 |
| 1989 | 0.279803 |
| 1988 | 0.273415 |
| 1987 | 0.267555 |
| 1986 | 0.261647 |
| 1985 | 0.256506 |
| 1984 | 0.251764 |
| 1983 | 0.246345 |
| 1982 | 0.241113 |
| 1981 | 0.236591 |
| 1980 | 0.232391 |
| 1979 | 0.228538 |
| 1978 | 0.224537 |
| 1977 | 0.220334 |
| 1976 | 0.217301 |
| 1975 | 0.214088 |
| 1974 | 0.209771 |
| 1973 | 0.205863 |
| 1972 | 0.202754 |
| 1971 | 0.198509 |
| 1970 | 0.193401 |
| 1969 | 0.1888 |
| 1968 | 0.185861 |
| 1967 | 0.184372 |
| 1966 | 0.182909 |
| 1965 | 0.1823 |
| 1964 | 0.182213 |
| 1963 | 0.181399 |
| 1962 | 0.180282 |
| 1961 | 0.180118 |
| 1960 | 0.180503 |