| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 8.71029 |
| 2021 | 8.883 |
| 2020 | 9.00936 |
| 2019 | 9.10801 |
| 2018 | 9.2125 |
| 2017 | 9.3607 |
| 2016 | 9.57356 |
| 2015 | 9.85574 |
| 2014 | 10.1994 |
| 2013 | 10.5808 |
| 2012 | 10.9514 |
| 2011 | 11.2476 |
| 2010 | 11.4476 |
| 2009 | 11.5594 |
| 2008 | 11.5806 |
| 2007 | 11.5416 |
| 2006 | 11.5265 |
| 2005 | 11.595 |
| 2004 | 11.6932 |
| 2003 | 11.7311 |
| 2002 | 11.6658 |
| 2001 | 11.4839 |
| 2000 | 11.2042 |
| 1999 | 10.856 |
| 1998 | 10.6119 |
| 1997 | 10.5019 |
| 1996 | 10.3862 |
| 1995 | 10.2665 |
| 1994 | 10.1419 |
| 1993 | 10.0187 |
| 1992 | 9.89581 |
| 1991 | 9.78993 |
| 1990 | 9.70037 |
| 1989 | 9.61997 |
| 1988 | 9.54142 |
| 1987 | 9.4618 |
| 1986 | 9.38252 |
| 1985 | 9.30415 |
| 1984 | 9.22534 |
| 1983 | 9.1473 |
| 1982 | 9.07257 |
| 1981 | 9.00303 |
| 1980 | 8.93946 |
| 1979 | 8.88313 |
| 1978 | 8.83652 |
| 1977 | 8.80051 |
| 1976 | 8.77368 |
| 1975 | 8.7541 |
| 1974 | 8.74137 |
| 1973 | 8.73368 |
| 1972 | 8.72774 |
| 1971 | 8.72324 |
| 1970 | 8.72264 |
| 1969 | 8.82549 |
| 1968 | 9.03937 |
| 1967 | 9.34209 |
| 1966 | 9.74587 |
| 1965 | 10.1718 |
| 1964 | 10.4829 |
| 1963 | 10.6666 |
| 1962 | 10.7506 |
| 1961 | 10.7218 |
| 1960 | 10.6781 |