| 年份 | 不丹  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 0.637078 | 
| 2021 | 0.642586 | 
| 2020 | 0.655472 | 
| 2019 | 0.701253 | 
| 2018 | 0.787112 | 
| 2017 | 0.844693 | 
| 2016 | 0.868974 | 
| 2015 | 0.93497 | 
| 2014 | 1.01936 | 
| 2013 | 1.06812 | 
| 2012 | 1.08947 | 
| 2011 | 1.10161 | 
| 2010 | 1.11718 | 
| 2009 | 1.14473 | 
| 2008 | 1.18468 | 
| 2007 | 1.23319 | 
| 2006 | 1.48695 | 
| 2005 | 2.03035 | 
| 2004 | 2.39211 | 
| 2003 | 2.48546 | 
| 2002 | 2.58776 | 
| 2001 | 2.69278 | 
| 2000 | 2.80057 | 
| 1999 | 2.45498 | 
| 1998 | 1.862 | 
| 1997 | 1.72844 | 
| 1996 | 1.87005 | 
| 1995 | 1.19682 | 
| 1994 | 0.0809905 | 
| 1993 | -4.70774 | 
| 1992 | -3.90943 | 
| 1991 | 1.646 | 
| 1990 | 2.58174 | 
| 1989 | 2.82485 | 
| 1988 | 2.8811 | 
| 1987 | 2.93652 | 
| 1986 | 2.97334 | 
| 1985 | 3.00915 | 
| 1984 | 3.05185 | 
| 1983 | 3.08006 | 
| 1982 | 3.11448 | 
| 1981 | 3.17221 | 
| 1980 | 3.22888 | 
| 1979 | 3.28444 | 
| 1978 | 3.31465 | 
| 1977 | 3.31371 | 
| 1976 | 3.30856 | 
| 1975 | 3.29761 | 
| 1974 | 3.29326 | 
| 1973 | 3.28941 | 
| 1972 | 3.27786 | 
| 1971 | 3.27246 | 
| 1970 | 3.26386 | 
| 1969 | 3.22966 | 
| 1968 | 3.17849 | 
| 1967 | 3.13062 | 
| 1966 | 3.076 | 
| 1965 | 3.01185 | 
| 1964 | 2.94293 | 
| 1963 | 2.89284 | 
| 1962 | 2.75638 | 
| 1961 | 2.58971 | 
| 1960 | - |