| 年份 | 保加利亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 0.171862 | 
| 2020 | 0.199738 | 
| 2019 | 0.220944 | 
| 2018 | 0.24613 | 
| 2017 | 0.265773 | 
| 2016 | 0.225103 | 
| 2015 | 0.25489 | 
| 2014 | 0.22363 | 
| 2013 | 0.242573 | 
| 2012 | 0.260007 | 
| 2011 | 0.281885 | 
| 2010 | 0.242161 | 
| 2009 | 0.198003 | 
| 2008 | 0.272464 | 
| 2007 | 0.278556 | 
| 2006 | 0.302786 | 
| 2005 | 0.289636 | 
| 2004 | 0.330846 | 
| 2003 | 0.31415 | 
| 2002 | 0.320414 | 
| 2001 | 0.327469 | 
| 2000 | 0.460819 | 
| 1999 | 0.524 | 
| 1998 | 0.294203 | 
| 1997 | 0.437598 | 
| 1996 | 0.478301 | 
| 1995 | 0.271917 | 
| 1994 | 0.446538 | 
| 1993 | 0.605782 | 
| 1992 | 0.635646 | 
| 1991 | 0.608133 | 
| 1990 | 0.394527 | 
| 1989 | 0.421659 | 
| 1988 | 0.422288 | 
| 1987 | 0.301033 | 
| 1986 | 0.500018 | 
| 1985 | 0.574529 | 
| 1984 | 0.484962 | 
| 1983 | 0.476014 | 
| 1982 | 0.458094 | 
| 1981 | 0.549379 | 
| 1980 | 0.670175 | 
| 1979 | - | 
| 1978 | - | 
| 1977 | - | 
| 1976 | - | 
| 1975 | - | 
| 1974 | - | 
| 1973 | - | 
| 1972 | - | 
| 1971 | - | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |