| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.126366 |
| 2020 | 0.0586013 |
| 2019 | 0.0885343 |
| 2018 | 0.135711 |
| 2017 | 0.144852 |
| 2016 | 0.106693 |
| 2015 | 0.115667 |
| 2014 | 0.139417 |
| 2013 | 0.159088 |
| 2012 | 0.372703 |
| 2011 | 0.918739 |
| 2010 | 0.676778 |
| 2009 | 0.321964 |
| 2008 | 1.10495 |
| 2007 | 0.435745 |
| 2006 | 0.309202 |
| 2005 | 0.326959 |
| 2004 | 0.624654 |
| 2003 | 0.082772 |
| 2002 | 0.0960635 |
| 2001 | 0.334376 |
| 2000 | 0.101418 |
| 1999 | 0.0110017 |
| 1998 | 0.0590828 |
| 1997 | 0.0404969 |
| 1996 | 0.0930148 |
| 1995 | 0.101534 |
| 1994 | 0.0385526 |
| 1993 | 0.0272037 |
| 1992 | 0.26654 |
| 1991 | 0.374248 |
| 1990 | 0.230385 |
| 1989 | 0.0697531 |
| 1988 | 0.0523169 |
| 1987 | 0.0294597 |
| 1986 | 0.123138 |
| 1985 | 0.427396 |
| 1984 | 0.313229 |
| 1983 | 0.588508 |
| 1982 | 1.18189 |
| 1981 | 0.974165 |
| 1980 | 0.4785 |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |