| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 7.49475 |
| 2021 | 7.22693 |
| 2020 | 6.91145 |
| 2019 | 6.56369 |
| 2018 | 6.22224 |
| 2017 | 5.9199 |
| 2016 | 5.71601 |
| 2015 | 5.61002 |
| 2014 | 5.54799 |
| 2013 | 5.51049 |
| 2012 | 5.47572 |
| 2011 | 5.43247 |
| 2010 | 5.3727 |
| 2009 | 5.29781 |
| 2008 | 5.21555 |
| 2007 | 5.13567 |
| 2006 | 5.06573 |
| 2005 | 4.99367 |
| 2004 | 4.90732 |
| 2003 | 4.8281 |
| 2002 | 4.77584 |
| 2001 | 4.74698 |
| 2000 | 4.7367 |
| 1999 | 4.74435 |
| 1998 | 4.75639 |
| 1997 | 4.76596 |
| 1996 | 4.78211 |
| 1995 | 4.7981 |
| 1994 | 4.85978 |
| 1993 | 4.96922 |
| 1992 | 5.12561 |
| 1991 | 5.31325 |
| 1990 | 5.49981 |
| 1989 | 5.63754 |
| 1988 | 5.72485 |
| 1987 | 5.77515 |
| 1986 | 5.7824 |
| 1985 | 5.78048 |
| 1984 | 5.77847 |
| 1983 | 5.78199 |
| 1982 | 5.79001 |
| 1981 | 5.79823 |
| 1980 | 5.80265 |
| 1979 | 5.80237 |
| 1978 | 5.79582 |
| 1977 | 5.78068 |
| 1976 | 5.75889 |
| 1975 | 5.73209 |
| 1974 | 5.69848 |
| 1973 | 5.6559 |
| 1972 | 5.60647 |
| 1971 | 5.55242 |
| 1970 | 5.4955 |
| 1969 | 5.43635 |
| 1968 | 5.37323 |
| 1967 | 5.30788 |
| 1966 | 5.24204 |
| 1965 | 5.17521 |
| 1964 | 5.10937 |
| 1963 | 5.04614 |
| 1962 | 4.98485 |
| 1961 | 4.92761 |
| 1960 | 4.87397 |