| 年份 | 保加利亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 0.593627 | 
| 2020 | 0.348456 | 
| 2019 | 0.248855 | 
| 2018 | 0.270433 | 
| 2017 | 0.316211 | 
| 2016 | 0.177082 | 
| 2015 | 0.260085 | 
| 2014 | 0.36071 | 
| 2013 | 0.608878 | 
| 2012 | 0.847075 | 
| 2011 | 0.816225 | 
| 2010 | 0.72436 | 
| 2009 | 0.159924 | 
| 2008 | 0.515521 | 
| 2007 | 0.896093 | 
| 2006 | 1.09488 | 
| 2005 | 0.281831 | 
| 2004 | 0.109884 | 
| 2003 | 0.0145645 | 
| 2002 | 0.0179545 | 
| 2001 | 0.0257602 | 
| 2000 | 0.0433463 | 
| 1999 | 0.0652163 | 
| 1998 | 0.178117 | 
| 1997 | 0.467957 | 
| 1996 | 0.400762 | 
| 1995 | 0.459059 | 
| 1994 | 0.575114 | 
| 1993 | 0.317299 | 
| 1992 | 0.454915 | 
| 1991 | 0.3766 | 
| 1990 | 0.382673 | 
| 1989 | 2.15475 | 
| 1988 | 2.45228 | 
| 1987 | 0.163185 | 
| 1986 | 0.133536 | 
| 1985 | 0.498919 | 
| 1984 | 0.386032 | 
| 1983 | 0.346013 | 
| 1982 | 0.35206 | 
| 1981 | 0.345233 | 
| 1980 | 0.558803 | 
| 1979 | - | 
| 1978 | - | 
| 1977 | - | 
| 1976 | - | 
| 1975 | - | 
| 1974 | - | 
| 1973 | - | 
| 1972 | - | 
| 1971 | - | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |