| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 24.5 |
| 2020 | 25.2 |
| 2019 | 26 |
| 2018 | 26.9 |
| 2017 | 27.8 |
| 2016 | 28.8 |
| 2015 | 29.9 |
| 2014 | 31 |
| 2013 | 32.3 |
| 2012 | 33.6 |
| 2011 | 35.2 |
| 2010 | 37 |
| 2009 | 38.9 |
| 2008 | 41.1 |
| 2007 | 43.3 |
| 2006 | 45.6 |
| 2005 | 48.1 |
| 2004 | 50.6 |
| 2003 | 53.1 |
| 2002 | 55.7 |
| 2001 | 58.4 |
| 2000 | 61.1 |
| 1999 | 63.9 |
| 1998 | 66.9 |
| 1997 | 69.9 |
| 1996 | 73.1 |
| 1995 | 76.3 |
| 1994 | 79.6 |
| 1993 | 83 |
| 1992 | 86.4 |
| 1991 | 90 |
| 1990 | 93.7 |
| 1989 | 97.5 |
| 1988 | 101.4 |
| 1987 | 105.5 |
| 1986 | 109.5 |
| 1985 | 113.7 |
| 1984 | 118 |
| 1983 | 122.4 |
| 1982 | 127 |
| 1981 | 131.7 |
| 1980 | 136.5 |
| 1979 | 141.4 |
| 1978 | 146.3 |
| 1977 | 151.5 |
| 1976 | 156.6 |
| 1975 | 161.9 |
| 1974 | 167.3 |
| 1973 | 173.1 |
| 1972 | 178.8 |
| 1971 | 184.5 |
| 1970 | 190.3 |
| 1969 | 196.7 |
| 1968 | 203.2 |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |