| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0193926 |
| 2020 | 0.00967334 |
| 2019 | 0.0184983 |
| 2018 | 0.0215683 |
| 2017 | 0.015054 |
| 2016 | 0.0107368 |
| 2015 | 0.0148485 |
| 2014 | 0.0309655 |
| 2013 | 0.0340056 |
| 2012 | 0.0377762 |
| 2011 | 0.0367279 |
| 2010 | 0.0253292 |
| 2009 | 0.0216534 |
| 2008 | 0.0385928 |
| 2007 | 0.0320679 |
| 2006 | 0.0372115 |
| 2005 | 0.0371743 |
| 2004 | 0.0286551 |
| 2003 | 0.016183 |
| 2002 | 0.0210526 |
| 2001 | 0.0192284 |
| 2000 | 0.0741392 |
| 1999 | 0.0163646 |
| 1998 | 0.00502767 |
| 1997 | 0.0161313 |
| 1996 | 0.0217715 |
| 1995 | 0.0145596 |
| 1994 | 0.0271668 |
| 1993 | 0.0187796 |
| 1992 | 0.0294458 |
| 1991 | 0.0292034 |
| 1990 | 0.10571 |
| 1989 | 0.0905875 |
| 1988 | 0.0486972 |
| 1987 | 0.0579644 |
| 1986 | 0.0489958 |
| 1985 | 0.156159 |
| 1984 | 0.101804 |
| 1983 | 0.0743297 |
| 1982 | 0.0536327 |
| 1981 | 0.0770048 |
| 1980 | 0.0995954 |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |