| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | 2.87324 |
| 2019 | 5.44947 |
| 2018 | 4.07455 |
| 2017 | 4.52332 |
| 2016 | 4.15559 |
| 2015 | 5.00974 |
| 2014 | 3.62439 |
| 2013 | 0.936628 |
| 2012 | 1.16597 |
| 2011 | 1.01647 |
| 2010 | 0.673454 |
| 2009 | 0.988474 |
| 2008 | 0.832366 |
| 2007 | 1.01928 |
| 2006 | 1.28859 |
| 2005 | 2.31101 |
| 2004 | 1.48302 |
| 2003 | 1.65241 |
| 2002 | 1.21489 |
| 2001 | 1.09864 |
| 2000 | 0.905216 |
| 1999 | 0.986361 |
| 1998 | 1.06522 |
| 1997 | 1.05015 |
| 1996 | 0.691563 |
| 1995 | 1.15868 |
| 1994 | 1.01699 |
| 1993 | 0.488715 |
| 1992 | 0.554148 |
| 1991 | 0.375918 |
| 1990 | 0.218957 |
| 1989 | 0.366642 |
| 1988 | 0.255464 |
| 1987 | - |
| 1986 | 0.367416 |
| 1985 | 0.41395 |
| 1984 | 0.483153 |
| 1983 | - |
| 1982 | 0.120579 |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |