| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 6.74741 |
| 2021 | 6.89651 |
| 2020 | 7.05692 |
| 2019 | 7.10024 |
| 2018 | 7.05507 |
| 2017 | 7.03146 |
| 2016 | 7.01873 |
| 2015 | 7.00193 |
| 2014 | 7.01677 |
| 2013 | 7.06584 |
| 2012 | 7.07733 |
| 2011 | 7.00796 |
| 2010 | 6.93559 |
| 2009 | 6.9256 |
| 2008 | 6.92943 |
| 2007 | 6.92852 |
| 2006 | 6.94471 |
| 2005 | 6.89329 |
| 2004 | 6.70187 |
| 2003 | 6.41952 |
| 2002 | 6.11929 |
| 2001 | 5.8361 |
| 2000 | 5.59558 |
| 1999 | 5.43692 |
| 1998 | 5.35955 |
| 1997 | 5.34993 |
| 1996 | 5.40177 |
| 1995 | 5.52219 |
| 1994 | 5.70988 |
| 1993 | 5.91707 |
| 1992 | 6.08444 |
| 1991 | 6.18191 |
| 1990 | 6.20869 |
| 1989 | 6.18156 |
| 1988 | 6.13087 |
| 1987 | 6.09231 |
| 1986 | 6.08843 |
| 1985 | 6.12227 |
| 1984 | 6.18069 |
| 1983 | 6.21846 |
| 1982 | 6.20168 |
| 1981 | 6.14075 |
| 1980 | 6.01833 |
| 1979 | 5.77398 |
| 1978 | 5.40773 |
| 1977 | 4.99139 |
| 1976 | 4.59242 |
| 1975 | 4.28272 |
| 1974 | 4.18254 |
| 1973 | 4.31745 |
| 1972 | 4.56171 |
| 1971 | 4.83536 |
| 1970 | 5.11838 |
| 1969 | 5.33801 |
| 1968 | 5.45998 |
| 1967 | 5.54257 |
| 1966 | 5.58287 |
| 1965 | 5.54559 |
| 1964 | 5.4654 |
| 1963 | 5.37057 |
| 1962 | 5.25758 |
| 1961 | 5.13562 |
| 1960 | 4.99508 |