| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 8.11792 |
| 2021 | 8.20782 |
| 2020 | 8.34657 |
| 2019 | 8.53641 |
| 2018 | 8.76048 |
| 2017 | 8.98916 |
| 2016 | 9.1609 |
| 2015 | 9.26096 |
| 2014 | 9.3462 |
| 2013 | 9.45848 |
| 2012 | 9.63266 |
| 2011 | 9.88267 |
| 2010 | 10.1738 |
| 2009 | 10.4822 |
| 2008 | 10.8126 |
| 2007 | 11.1248 |
| 2006 | 11.3575 |
| 2005 | 11.5558 |
| 2004 | 11.7922 |
| 2003 | 12.0003 |
| 2002 | 12.131 |
| 2001 | 12.223 |
| 2000 | 12.2627 |
| 1999 | 12.2089 |
| 1998 | 12.1383 |
| 1997 | 12.1004 |
| 1996 | 12.0504 |
| 1995 | 11.9999 |
| 1994 | 11.9476 |
| 1993 | 11.8858 |
| 1992 | 11.8063 |
| 1991 | 11.7178 |
| 1990 | 11.6208 |
| 1989 | 11.527 |
| 1988 | 11.4423 |
| 1987 | 11.3592 |
| 1986 | 11.2798 |
| 1985 | 11.2039 |
| 1984 | 11.1312 |
| 1983 | 11.0584 |
| 1982 | 10.9811 |
| 1981 | 10.9027 |
| 1980 | 10.8268 |
| 1979 | 10.7513 |
| 1978 | 10.6765 |
| 1977 | 10.6023 |
| 1976 | 10.5268 |
| 1975 | 10.4531 |
| 1974 | 10.3848 |
| 1973 | 10.3258 |
| 1972 | 10.2788 |
| 1971 | 10.2437 |
| 1970 | 10.2166 |
| 1969 | 10.1973 |
| 1968 | 10.1819 |
| 1967 | 10.1635 |
| 1966 | 10.1461 |
| 1965 | 10.1325 |
| 1964 | 10.2413 |
| 1963 | 10.483 |
| 1962 | 10.8305 |
| 1961 | 11.2881 |
| 1960 | 11.7581 |