| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 7.848 |
| 2021 | 7.94353 |
| 2020 | 8.06621 |
| 2019 | 8.18584 |
| 2018 | 8.23506 |
| 2017 | 8.10475 |
| 2016 | 7.88623 |
| 2015 | 7.7282 |
| 2014 | 7.60467 |
| 2013 | 7.54277 |
| 2012 | 7.47843 |
| 2011 | 7.31034 |
| 2010 | 7.10601 |
| 2009 | 6.92872 |
| 2008 | 6.79318 |
| 2007 | 6.79244 |
| 2006 | 6.94516 |
| 2005 | 7.10381 |
| 2004 | 7.16179 |
| 2003 | 7.14619 |
| 2002 | 7.15068 |
| 2001 | 7.16148 |
| 2000 | 7.15343 |
| 1999 | 7.15207 |
| 1998 | 7.1658 |
| 1997 | 7.15008 |
| 1996 | 7.0851 |
| 1995 | 7.02693 |
| 1994 | 7.02714 |
| 1993 | 7.06477 |
| 1992 | 7.11179 |
| 1991 | 7.16462 |
| 1990 | 7.16419 |
| 1989 | 7.04053 |
| 1988 | 6.80726 |
| 1987 | 6.53518 |
| 1986 | 6.26969 |
| 1985 | 6.03413 |
| 1984 | 5.87571 |
| 1983 | 5.80965 |
| 1982 | 5.82754 |
| 1981 | 5.922 |
| 1980 | 6.09511 |
| 1979 | 6.34826 |
| 1978 | 6.6362 |
| 1977 | 6.89397 |
| 1976 | 7.09223 |
| 1975 | 7.22117 |
| 1974 | 7.28385 |
| 1973 | 7.30936 |
| 1972 | 7.33756 |
| 1971 | 7.40465 |
| 1970 | 7.52658 |
| 1969 | 7.6867 |
| 1968 | 7.8263 |
| 1967 | 7.87699 |
| 1966 | 7.83296 |
| 1965 | 7.69391 |
| 1964 | 7.39674 |
| 1963 | 6.94517 |
| 1962 | 6.42902 |
| 1961 | 5.92617 |
| 1960 | 5.51706 |