| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 6.477 |
| 2020 | 6.545 |
| 2019 | 6.626 |
| 2018 | 6.766 |
| 2017 | 6.94 |
| 2016 | 6.837 |
| 2015 | 6.759 |
| 2014 | 6.705 |
| 2013 | 6.683 |
| 2012 | 6.689 |
| 2011 | 6.737 |
| 2010 | 6.808 |
| 2009 | 6.922 |
| 2008 | 7.009 |
| 2007 | 7.166 |
| 2006 | 7.353 |
| 2005 | 7.473 |
| 2004 | 7.498 |
| 2003 | 7.542 |
| 2002 | 7.669 |
| 2001 | 7.827 |
| 2000 | 8.368 |
| 1999 | 8.221 |
| 1998 | 8.529 |
| 1997 | 8.858 |
| 1996 | 9.189 |
| 1995 | 9.555 |
| 1994 | 10.024 |
| 1993 | 10.312 |
| 1992 | 10.699 |
| 1991 | 11.145 |
| 1990 | 11.543 |
| 1989 | 11.97 |
| 1988 | 12.426 |
| 1987 | 12.921 |
| 1986 | 13.431 |
| 1985 | 13.951 |
| 1984 | 14.444 |
| 1983 | 14.976 |
| 1982 | 15.535 |
| 1981 | 16.13 |
| 1980 | 16.732 |
| 1979 | 17.338 |
| 1978 | 17.959 |
| 1977 | 18.587 |
| 1976 | 19.252 |
| 1975 | 19.946 |
| 1974 | 20.637 |
| 1973 | 21.347 |
| 1972 | 22.114 |
| 1971 | 22.873 |
| 1970 | 23.621 |
| 1969 | 24.406 |
| 1968 | 25.235 |
| 1967 | 25.896 |
| 1966 | 26.556 |
| 1965 | 27.187 |
| 1964 | 27.775 |
| 1963 | 28.33 |
| 1962 | 28.86 |
| 1961 | 29.361 |
| 1960 | 29.82 |