| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 6.59996 |
| 2021 | 6.71153 |
| 2020 | 6.73852 |
| 2019 | 6.69165 |
| 2018 | 6.62209 |
| 2017 | 6.52407 |
| 2016 | 6.36224 |
| 2015 | 6.17479 |
| 2014 | 5.96602 |
| 2013 | 5.72194 |
| 2012 | 5.50185 |
| 2011 | 5.32725 |
| 2010 | 5.18178 |
| 2009 | 5.04242 |
| 2008 | 4.90182 |
| 2007 | 4.76987 |
| 2006 | 4.63432 |
| 2005 | 4.49091 |
| 2004 | 4.33837 |
| 2003 | 4.20234 |
| 2002 | 4.09519 |
| 2001 | 3.98078 |
| 2000 | 3.87173 |
| 1999 | 3.79034 |
| 1998 | 3.75709 |
| 1997 | 3.78677 |
| 1996 | 3.81856 |
| 1995 | 3.81462 |
| 1994 | 3.74207 |
| 1993 | 3.60571 |
| 1992 | 3.47495 |
| 1991 | 3.36355 |
| 1990 | 3.2379 |
| 1989 | 3.09505 |
| 1988 | 2.96489 |
| 1987 | 2.85259 |
| 1986 | 2.7384 |
| 1985 | 2.62043 |
| 1984 | 2.49843 |
| 1983 | 2.38672 |
| 1982 | 2.2919 |
| 1981 | 2.18885 |
| 1980 | 2.09166 |
| 1979 | 2.0103 |
| 1978 | 1.93997 |
| 1977 | 1.89276 |
| 1976 | 1.84989 |
| 1975 | 1.80556 |
| 1974 | 1.77363 |
| 1973 | 1.74866 |
| 1972 | 1.73764 |
| 1971 | 1.72736 |
| 1970 | 1.69907 |
| 1969 | 1.66882 |
| 1968 | 1.63385 |
| 1967 | 1.5894 |
| 1966 | 1.52794 |
| 1965 | 1.44123 |
| 1964 | 1.34559 |
| 1963 | 1.27248 |
| 1962 | 1.24907 |
| 1961 | 1.2353 |
| 1960 | 1.21992 |