| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 1.413 |
| 2020 | 1.433 |
| 2019 | 1.46 |
| 2018 | 1.569 |
| 2017 | 1.704 |
| 2016 | 1.835 |
| 2015 | 1.957 |
| 2014 | 2.027 |
| 2013 | 2.087 |
| 2012 | 2.138 |
| 2011 | 2.21 |
| 2010 | 2.296 |
| 2009 | 2.381 |
| 2008 | 2.496 |
| 2007 | 2.59 |
| 2006 | 2.669 |
| 2005 | 2.798 |
| 2004 | 2.893 |
| 2003 | 2.916 |
| 2002 | 3.078 |
| 2001 | 3.232 |
| 2000 | 3.414 |
| 1999 | 3.607 |
| 1998 | 3.853 |
| 1997 | 4.088 |
| 1996 | 4.369 |
| 1995 | 4.624 |
| 1994 | 4.866 |
| 1993 | 5.072 |
| 1992 | 5.267 |
| 1991 | 5.451 |
| 1990 | 5.604 |
| 1989 | 5.757 |
| 1988 | 5.88 |
| 1987 | 5.999 |
| 1986 | 6.103 |
| 1985 | 6.176 |
| 1984 | 6.262 |
| 1983 | 6.336 |
| 1982 | 6.402 |
| 1981 | 6.46 |
| 1980 | 6.511 |
| 1979 | 6.553 |
| 1978 | 6.584 |
| 1977 | 6.605 |
| 1976 | 6.616 |
| 1975 | 6.62 |
| 1974 | 6.618 |
| 1973 | 6.633 |
| 1972 | 6.639 |
| 1971 | 6.643 |
| 1970 | 6.65 |
| 1969 | 6.658 |
| 1968 | 6.664 |
| 1967 | 6.669 |
| 1966 | 6.674 |
| 1965 | 6.679 |
| 1964 | 6.682 |
| 1963 | 6.687 |
| 1962 | 6.692 |
| 1961 | 6.698 |
| 1960 | 6.704 |