| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 0.933491 |
| 2021 | 0.94955 |
| 2020 | 0.975312 |
| 2019 | 1.00785 |
| 2018 | 1.04417 |
| 2017 | 1.08513 |
| 2016 | 1.0704 |
| 2015 | 0.998517 |
| 2014 | 0.932156 |
| 2013 | 0.872114 |
| 2012 | 0.817546 |
| 2011 | 0.770723 |
| 2010 | 0.733652 |
| 2009 | 0.706797 |
| 2008 | 0.689337 |
| 2007 | 0.680553 |
| 2006 | 0.679962 |
| 2005 | 0.665663 |
| 2004 | 0.609073 |
| 2003 | 0.530515 |
| 2002 | 0.461242 |
| 2001 | 0.402507 |
| 2000 | 0.353622 |
| 1999 | 0.313833 |
| 1998 | 0.290856 |
| 1997 | 0.280871 |
| 1996 | 0.271466 |
| 1995 | 0.262769 |
| 1994 | 0.255661 |
| 1993 | 0.249293 |
| 1992 | 0.242642 |
| 1991 | 0.236773 |
| 1990 | 0.232152 |
| 1989 | 0.228997 |
| 1988 | 0.225793 |
| 1987 | 0.222372 |
| 1986 | 0.21909 |
| 1985 | 0.216109 |
| 1984 | 0.213663 |
| 1983 | 0.211812 |
| 1982 | 0.210573 |
| 1981 | 0.209363 |
| 1980 | 0.206868 |
| 1979 | 0.203913 |
| 1978 | 0.201421 |
| 1977 | 0.199378 |
| 1976 | 0.197768 |
| 1975 | 0.196368 |
| 1974 | 0.194633 |
| 1973 | 0.191981 |
| 1972 | 0.190131 |
| 1971 | 0.188543 |
| 1970 | 0.187267 |
| 1969 | 0.187014 |
| 1968 | 0.187506 |
| 1967 | 0.188429 |
| 1966 | 0.18766 |
| 1965 | 0.185409 |
| 1964 | 0.184258 |
| 1963 | 0.181123 |
| 1962 | 0.173818 |
| 1961 | 0.169477 |
| 1960 | 0.167917 |