| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 7.7122 |
| 2021 | 7.48883 |
| 2020 | 7.22236 |
| 2019 | 6.98033 |
| 2018 | 6.79188 |
| 2017 | 6.77649 |
| 2016 | 6.94687 |
| 2015 | 7.12316 |
| 2014 | 7.17367 |
| 2013 | 7.13325 |
| 2012 | 7.1191 |
| 2011 | 7.12019 |
| 2010 | 7.11671 |
| 2009 | 7.14623 |
| 2008 | 7.20878 |
| 2007 | 7.23336 |
| 2006 | 7.18033 |
| 2005 | 7.12066 |
| 2004 | 7.11598 |
| 2003 | 7.12768 |
| 2002 | 7.13507 |
| 2001 | 7.14859 |
| 2000 | 7.09674 |
| 1999 | 6.91288 |
| 1998 | 6.62974 |
| 1997 | 6.32112 |
| 1996 | 6.03101 |
| 1995 | 5.7848 |
| 1994 | 5.62413 |
| 1993 | 5.55404 |
| 1992 | 5.56192 |
| 1991 | 5.63595 |
| 1990 | 5.78346 |
| 1989 | 6.00539 |
| 1988 | 6.24967 |
| 1987 | 6.45438 |
| 1986 | 6.59523 |
| 1985 | 6.66411 |
| 1984 | 6.66647 |
| 1983 | 6.63975 |
| 1982 | 6.62683 |
| 1981 | 6.65257 |
| 1980 | 6.71783 |
| 1979 | 6.81156 |
| 1978 | 6.88772 |
| 1977 | 6.902 |
| 1976 | 6.85938 |
| 1975 | 6.7389 |
| 1974 | 6.4688 |
| 1973 | 6.04982 |
| 1972 | 5.57179 |
| 1971 | 5.11996 |
| 1970 | 4.77611 |
| 1969 | 4.66393 |
| 1968 | 4.80924 |
| 1967 | 5.07135 |
| 1966 | 5.35603 |
| 1965 | 5.64351 |
| 1964 | 5.85836 |
| 1963 | 5.9685 |
| 1962 | 6.04508 |
| 1961 | 6.09798 |
| 1960 | 6.08667 |