| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | 5.65446 |
| 2021 | 5.40277 |
| 2020 | 5.2063 |
| 2019 | 5.06555 |
| 2018 | 4.96442 |
| 2017 | 4.88479 |
| 2016 | 4.83588 |
| 2015 | 4.79205 |
| 2014 | 4.72194 |
| 2013 | 4.63838 |
| 2012 | 4.5504 |
| 2011 | 4.46851 |
| 2010 | 4.39992 |
| 2009 | 4.34645 |
| 2008 | 4.30723 |
| 2007 | 4.27892 |
| 2006 | 4.2561 |
| 2005 | 4.22873 |
| 2004 | 4.19071 |
| 2003 | 4.15252 |
| 2002 | 4.12632 |
| 2001 | 4.11718 |
| 2000 | 4.12706 |
| 1999 | 4.20056 |
| 1998 | 4.29786 |
| 1997 | 4.39206 |
| 1996 | 4.52359 |
| 1995 | 4.67001 |
| 1994 | 4.77838 |
| 1993 | 4.84272 |
| 1992 | 4.87504 |
| 1991 | 4.86628 |
| 1990 | 4.85113 |
| 1989 | 4.83729 |
| 1988 | 4.82929 |
| 1987 | 4.82532 |
| 1986 | 4.82247 |
| 1985 | 4.81776 |
| 1984 | 4.80956 |
| 1983 | 4.79646 |
| 1982 | 4.77666 |
| 1981 | 4.75231 |
| 1980 | 4.72533 |
| 1979 | 4.69474 |
| 1978 | 4.65746 |
| 1977 | 4.61485 |
| 1976 | 4.56861 |
| 1975 | 4.52053 |
| 1974 | 4.47122 |
| 1973 | 4.41904 |
| 1972 | 4.36582 |
| 1971 | 4.31324 |
| 1970 | 4.25967 |
| 1969 | 4.2065 |
| 1968 | 4.15633 |
| 1967 | 4.10966 |
| 1966 | 4.0656 |
| 1965 | 4.02311 |
| 1964 | 3.98278 |
| 1963 | 3.94535 |
| 1962 | 3.91132 |
| 1961 | 3.88094 |
| 1960 | 3.85423 |