| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.917744 |
| 2020 | 0.618936 |
| 2019 | 0.58027 |
| 2018 | 0.678373 |
| 2017 | 0.749247 |
| 2016 | 0.526341 |
| 2015 | 0.658724 |
| 2014 | 0.784767 |
| 2013 | 1.10763 |
| 2012 | 1.60465 |
| 2011 | 2.14267 |
| 2010 | 1.67975 |
| 2009 | 0.704216 |
| 2008 | 1.9747 |
| 2007 | 1.68647 |
| 2006 | 1.83144 |
| 2005 | 0.981902 |
| 2004 | 1.13721 |
| 2003 | 0.430572 |
| 2002 | 0.459806 |
| 2001 | 0.714335 |
| 2000 | 0.68225 |
| 1999 | 0.617207 |
| 1998 | 0.537067 |
| 1997 | 0.969972 |
| 1996 | 1.00162 |
| 1995 | 0.853351 |
| 1994 | 1.09499 |
| 1993 | 0.977501 |
| 1992 | 1.38871 |
| 1991 | 1.38922 |
| 1990 | 1.11438 |
| 1989 | 2.73714 |
| 1988 | 2.97602 |
| 1987 | 0.552177 |
| 1986 | 0.807505 |
| 1985 | 1.65954 |
| 1984 | 1.29223 |
| 1983 | 1.49283 |
| 1982 | 2.05126 |
| 1981 | 1.96561 |
| 1980 | 1.84566 |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |