| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 7.03419 |
| 2021 | 6.84275 |
| 2020 | 6.62593 |
| 2019 | 6.43863 |
| 2018 | 6.28304 |
| 2017 | 6.28822 |
| 2016 | 6.4772 |
| 2015 | 6.66725 |
| 2014 | 6.73635 |
| 2013 | 6.7362 |
| 2012 | 6.76231 |
| 2011 | 6.79909 |
| 2010 | 6.84345 |
| 2009 | 6.91083 |
| 2008 | 6.99465 |
| 2007 | 7.05025 |
| 2006 | 7.03046 |
| 2005 | 7.01513 |
| 2004 | 7.09775 |
| 2003 | 7.19893 |
| 2002 | 7.26737 |
| 2001 | 7.34546 |
| 2000 | 7.34385 |
| 1999 | 7.16026 |
| 1998 | 6.86792 |
| 1997 | 6.56098 |
| 1996 | 6.25833 |
| 1995 | 6.00121 |
| 1994 | 5.84071 |
| 1993 | 5.76543 |
| 1992 | 5.76113 |
| 1991 | 5.82747 |
| 1990 | 5.96376 |
| 1989 | 6.16308 |
| 1988 | 6.37846 |
| 1987 | 6.545 |
| 1986 | 6.63946 |
| 1985 | 6.66706 |
| 1984 | 6.64306 |
| 1983 | 6.60871 |
| 1982 | 6.60858 |
| 1981 | 6.65296 |
| 1980 | 6.73024 |
| 1979 | 6.83258 |
| 1978 | 6.91529 |
| 1977 | 6.93153 |
| 1976 | 6.89473 |
| 1975 | 6.7857 |
| 1974 | 6.52655 |
| 1973 | 6.12309 |
| 1972 | 5.66514 |
| 1971 | 5.2301 |
| 1970 | 4.89457 |
| 1969 | 4.77363 |
| 1968 | 4.88735 |
| 1967 | 5.10105 |
| 1966 | 5.3316 |
| 1965 | 5.57041 |
| 1964 | 5.74902 |
| 1963 | 5.839 |
| 1962 | 5.90958 |
| 1961 | 5.96761 |
| 1960 | 5.96996 |