| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 9.40167 |
| 2021 | 9.63457 |
| 2020 | 9.78605 |
| 2019 | 9.85623 |
| 2018 | 9.86511 |
| 2017 | 9.85077 |
| 2016 | 9.85213 |
| 2015 | 9.92594 |
| 2014 | 10.1154 |
| 2013 | 10.4109 |
| 2012 | 10.7728 |
| 2011 | 11.1491 |
| 2010 | 11.5155 |
| 2009 | 11.8702 |
| 2008 | 12.1704 |
| 2007 | 12.3624 |
| 2006 | 12.4432 |
| 2005 | 12.3758 |
| 2004 | 12.123 |
| 2003 | 11.8084 |
| 2002 | 11.5504 |
| 2001 | 11.3464 |
| 2000 | 11.1873 |
| 1999 | 11.0667 |
| 1998 | 10.9698 |
| 1997 | 10.8768 |
| 1996 | 10.7788 |
| 1995 | 10.6777 |
| 1994 | 10.5726 |
| 1993 | 10.4692 |
| 1992 | 10.366 |
| 1991 | 10.2762 |
| 1990 | 10.1999 |
| 1989 | 10.1313 |
| 1988 | 10.0632 |
| 1987 | 9.99361 |
| 1986 | 9.9239 |
| 1985 | 9.85276 |
| 1984 | 9.7789 |
| 1983 | 9.70429 |
| 1982 | 9.62979 |
| 1981 | 9.55596 |
| 1980 | 9.48629 |
| 1979 | 9.42257 |
| 1978 | 9.36658 |
| 1977 | 9.32123 |
| 1976 | 9.28544 |
| 1975 | 9.25581 |
| 1974 | 9.23209 |
| 1973 | 9.21235 |
| 1972 | 9.19446 |
| 1971 | 9.17748 |
| 1970 | 9.16435 |
| 1969 | 9.23426 |
| 1968 | 9.38319 |
| 1967 | 9.60925 |
| 1966 | 9.93052 |
| 1965 | 10.2679 |
| 1964 | 10.5096 |
| 1963 | 10.652 |
| 1962 | 10.701 |
| 1961 | 10.6388 |
| 1960 | 10.5664 |