| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 13.4504 |
| 2020 | 13.4504 |
| 2019 | 13.4504 |
| 2018 | 13.4504 |
| 2017 | 13.449 |
| 2016 | 13.6063 |
| 2015 | 13.7891 |
| 2014 | 13.7891 |
| 2013 | 13.6317 |
| 2012 | 13.6317 |
| 2011 | 13.6317 |
| 2010 | 13.6422 |
| 2009 | 13.6422 |
| 2008 | 13.6763 |
| 2007 | 14.7703 |
| 2006 | 15.1376 |
| 2005 | 15.5574 |
| 2004 | 15.3212 |
| 2003 | 14.6482 |
| 2002 | 14.5729 |
| 2001 | 14.5477 |
| 2000 | 14.5226 |
| 1999 | 14.3719 |
| 1998 | 14.3719 |
| 1997 | 14.3719 |
| 1996 | 14.3216 |
| 1995 | 14.196 |
| 1994 | 12.7889 |
| 1993 | 10.8084 |
| 1992 | 10.787 |
| 1991 | 10.787 |
| 1990 | 9.71684 |
| 1989 | 9.67404 |
| 1988 | 9.84526 |
| 1987 | 9.95227 |
| 1986 | 9.50281 |
| 1985 | 9.50281 |
| 1984 | 9.50281 |
| 1983 | 9.20318 |
| 1982 | 8.94634 |
| 1981 | 8.83933 |
| 1980 | 8.83933 |
| 1979 | 8.66811 |
| 1978 | 8.56109 |
| 1977 | 8.56109 |
| 1976 | 8.51829 |
| 1975 | 8.38987 |
| 1974 | 8.38987 |
| 1973 | 8.24005 |
| 1972 | 8.24005 |
| 1971 | 8.17585 |
| 1970 | 8.17585 |
| 1969 | 7.91901 |
| 1968 | 7.91901 |
| 1967 | 7.87621 |
| 1966 | 7.87621 |
| 1965 | 7.8334 |
| 1964 | 7.812 |
| 1963 | 7.76919 |
| 1962 | 7.76919 |
| 1961 | 7.72639 |
| 1960 | - |