| 年份 | 不丹  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 2.73325 | 
| 2020 | 2.79203 | 
| 2019 | 2.19007 | 
| 2018 | 1.98851 | 
| 2017 | 3.36403 | 
| 2016 | 4.4364 | 
| 2015 | 4.0283 | 
| 2014 | 3.41886 | 
| 2013 | 3.47642 | 
| 2012 | 4.25283 | 
| 2011 | 4.92099 | 
| 2010 | 5.30448 | 
| 2009 | 3.53573 | 
| 2008 | 4.20221 | 
| 2007 | 4.30343 | 
| 2006 | 3.39463 | 
| 2005 | 2.69095 | 
| 2004 | 2.96503 | 
| 2003 | 3.33825 | 
| 2002 | 3.57416 | 
| 2001 | 3.85987 | 
| 2000 | 3.9925 | 
| 1999 | 4.28454 | 
| 1998 | 4.18977 | 
| 1997 | 4.28026 | 
| 1996 | 5.83499 | 
| 1995 | 6.12544 | 
| 1994 | 5.36071 | 
| 1993 | 6.51762 | 
| 1992 | 7.94073 | 
| 1991 | 7.57358 | 
| 1990 | 6.26212 | 
| 1989 | 5.76491 | 
| 1988 | 5.75257 | 
| 1987 | 6.15214 | 
| 1986 | 8.47257 | 
| 1985 | 5.91256 | 
| 1984 | 8.62082 | 
| 1983 | 10.6667 | 
| 1982 | 17.288 | 
| 1981 | 11.7053 | 
| 1980 | 14.4061 | 
| 1979 | - | 
| 1978 | - | 
| 1977 | - | 
| 1976 | - | 
| 1975 | - | 
| 1974 | - | 
| 1973 | - | 
| 1972 | - | 
| 1971 | - | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |