| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 8.73414 |
| 2021 | 8.63509 |
| 2020 | 8.5632 |
| 2019 | 8.53089 |
| 2018 | 8.5484 |
| 2017 | 8.61403 |
| 2016 | 8.58266 |
| 2015 | 8.43373 |
| 2014 | 8.29959 |
| 2013 | 8.1803 |
| 2012 | 8.07155 |
| 2011 | 7.9733 |
| 2010 | 7.88381 |
| 2009 | 7.80606 |
| 2008 | 7.74465 |
| 2007 | 7.70064 |
| 2006 | 7.66956 |
| 2005 | 7.6348 |
| 2004 | 7.56085 |
| 2003 | 7.4331 |
| 2002 | 7.2664 |
| 2001 | 7.06836 |
| 2000 | 6.84328 |
| 1999 | 6.59375 |
| 1998 | 6.40364 |
| 1997 | 6.2844 |
| 1996 | 6.16164 |
| 1995 | 6.0403 |
| 1994 | 5.9192 |
| 1993 | 5.79893 |
| 1992 | 5.67247 |
| 1991 | 5.55499 |
| 1990 | 5.44262 |
| 1989 | 5.33913 |
| 1988 | 5.24566 |
| 1987 | 5.15625 |
| 1986 | 5.07081 |
| 1985 | 4.98866 |
| 1984 | 4.91052 |
| 1983 | 4.83607 |
| 1982 | 4.76378 |
| 1981 | 4.69533 |
| 1980 | 4.63022 |
| 1979 | 4.56843 |
| 1978 | 4.51189 |
| 1977 | 4.46058 |
| 1976 | 4.41143 |
| 1975 | 4.36363 |
| 1974 | 4.31934 |
| 1973 | 4.27786 |
| 1972 | 4.24109 |
| 1971 | 4.20978 |
| 1970 | 4.17957 |
| 1969 | 4.15375 |
| 1968 | 4.13237 |
| 1967 | 4.11502 |
| 1966 | 4.09941 |
| 1965 | 4.08687 |
| 1964 | 4.08681 |
| 1963 | 4.09422 |
| 1962 | 4.10881 |
| 1961 | 4.13545 |
| 1960 | 4.1663 |