| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | -0.55967 |
| 2021 | -0.564186 |
| 2020 | -0.557673 |
| 2019 | -0.519287 |
| 2018 | -0.437063 |
| 2017 | -0.382768 |
| 2016 | -0.361565 |
| 2015 | -0.296845 |
| 2014 | -0.211743 |
| 2013 | -0.162055 |
| 2012 | -0.138292 |
| 2011 | -0.120495 |
| 2010 | -0.0764848 |
| 2009 | -0.0212837 |
| 2008 | 0.0423546 |
| 2007 | 0.118471 |
| 2006 | 0.39905 |
| 2005 | 0.406788 |
| 2004 | 0.770614 |
| 2003 | 0.929923 |
| 2002 | 1.09389 |
| 2001 | 1.25863 |
| 2000 | 1.42233 |
| 1999 | 1.1334 |
| 1998 | 0.596293 |
| 1997 | 0.518116 |
| 1996 | 0.706712 |
| 1995 | 0.0854381 |
| 1994 | -0.980995 |
| 1993 | -5.72356 |
| 1992 | -4.88091 |
| 1991 | 0.717025 |
| 1990 | 1.69703 |
| 1989 | 1.97974 |
| 1988 | 2.07439 |
| 1987 | 2.16654 |
| 1986 | 2.24012 |
| 1985 | 2.31207 |
| 1984 | 2.38443 |
| 1983 | 2.4465 |
| 1982 | 2.51047 |
| 1981 | 2.5987 |
| 1980 | 2.6818 |
| 1979 | 2.76447 |
| 1978 | 2.8195 |
| 1977 | 2.84469 |
| 1976 | 2.86048 |
| 1975 | 2.87303 |
| 1974 | 2.88977 |
| 1973 | 2.90686 |
| 1972 | 2.9129 |
| 1971 | 2.92688 |
| 1970 | 2.93623 |
| 1969 | 2.9181 |
| 1968 | 2.88289 |
| 1967 | 2.8492 |
| 1966 | 2.81008 |
| 1965 | 2.75929 |
| 1964 | 2.70367 |
| 1963 | 2.66539 |
| 1962 | 2.54136 |
| 1961 | 2.38611 |
| 1960 | - |