| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.42137 |
| 2020 | -10.2184 |
| 2019 | 5.75515 |
| 2018 | 3.50187 |
| 2017 | 4.65183 |
| 2016 | 8.12703 |
| 2015 | 6.64223 |
| 2014 | 5.7765 |
| 2013 | 2.11997 |
| 2012 | 5.1184 |
| 2011 | 7.98262 |
| 2010 | 11.9459 |
| 2009 | 6.74833 |
| 2008 | 4.79946 |
| 2007 | 18.3609 |
| 2006 | 6.99974 |
| 2005 | 7.28725 |
| 2004 | 6.00874 |
| 2003 | 7.8233 |
| 2002 | 10.9923 |
| 2001 | 8.34895 |
| 2000 | 3.35507 |
| 1999 | 7.98397 |
| 1998 | 5.91403 |
| 1997 | 5.37384 |
| 1996 | 5.56517 |
| 1995 | 7.07412 |
| 1994 | 4.9515 |
| 1993 | 1.98637 |
| 1992 | 4.60089 |
| 1991 | -0.407876 |
| 1990 | 10.3831 |
| 1989 | 7.35557 |
| 1988 | 4.76737 |
| 1987 | 29.0543 |
| 1986 | 11.3922 |
| 1985 | 4.02853 |
| 1984 | 4.55666 |
| 1983 | 10.431 |
| 1982 | 3.43977 |
| 1981 | 15.1223 |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |