| 年份 | 不丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 22.5 |
| 2020 | 23.1 |
| 2019 | 23.9 |
| 2018 | 24.7 |
| 2017 | 25.5 |
| 2016 | 26.4 |
| 2015 | 27.4 |
| 2014 | 28.5 |
| 2013 | 29.7 |
| 2012 | 31 |
| 2011 | 32.5 |
| 2010 | 34.1 |
| 2009 | 36 |
| 2008 | 38 |
| 2007 | 40.1 |
| 2006 | 42.3 |
| 2005 | 44.7 |
| 2004 | 47.1 |
| 2003 | 49.6 |
| 2002 | 52.1 |
| 2001 | 54.7 |
| 2000 | 57.4 |
| 1999 | 60.1 |
| 1998 | 63 |
| 1997 | 66 |
| 1996 | 69 |
| 1995 | 72.1 |
| 1994 | 75.3 |
| 1993 | 78.5 |
| 1992 | 81.9 |
| 1991 | 85.3 |
| 1990 | 88.9 |
| 1989 | 92.5 |
| 1988 | 96.3 |
| 1987 | 100.2 |
| 1986 | 104.3 |
| 1985 | 108.4 |
| 1984 | 112.6 |
| 1983 | 116.8 |
| 1982 | 121.2 |
| 1981 | 125.8 |
| 1980 | 130.5 |
| 1979 | 135.3 |
| 1978 | 139.9 |
| 1977 | 144.8 |
| 1976 | 149.7 |
| 1975 | 154.8 |
| 1974 | 159.9 |
| 1973 | 165.3 |
| 1972 | 170.8 |
| 1971 | 176.4 |
| 1970 | 181.9 |
| 1969 | 187.8 |
| 1968 | 194.2 |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |