| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 6.71938 |
| 2021 | 6.7218 |
| 2020 | 6.70983 |
| 2019 | 6.72408 |
| 2018 | 6.76847 |
| 2017 | 6.77541 |
| 2016 | 6.70448 |
| 2015 | 6.62796 |
| 2014 | 6.60215 |
| 2013 | 6.58252 |
| 2012 | 6.56327 |
| 2011 | 6.5702 |
| 2010 | 6.51084 |
| 2009 | 6.3246 |
| 2008 | 6.06737 |
| 2007 | 5.79765 |
| 2006 | 5.53848 |
| 2005 | 5.31571 |
| 2004 | 5.17347 |
| 2003 | 5.10605 |
| 2002 | 5.09847 |
| 2001 | 5.14582 |
| 2000 | 5.2525 |
| 1999 | 5.41741 |
| 1998 | 5.59361 |
| 1997 | 5.72775 |
| 1996 | 5.79584 |
| 1995 | 5.79383 |
| 1994 | 5.73813 |
| 1993 | 5.65774 |
| 1992 | 5.58729 |
| 1991 | 5.55364 |
| 1990 | 5.56135 |
| 1989 | 5.59563 |
| 1988 | 5.61825 |
| 1987 | 5.59879 |
| 1986 | 5.54984 |
| 1985 | 5.45096 |
| 1984 | 5.23886 |
| 1983 | 4.92025 |
| 1982 | 4.55856 |
| 1981 | 4.20741 |
| 1980 | 3.93142 |
| 1979 | 3.84085 |
| 1978 | 3.95905 |
| 1977 | 4.17137 |
| 1976 | 4.40406 |
| 1975 | 4.6428 |
| 1974 | 4.82167 |
| 1973 | 4.9052 |
| 1972 | 4.95545 |
| 1971 | 4.97795 |
| 1970 | 4.93928 |
| 1969 | 4.87128 |
| 1968 | 4.79254 |
| 1967 | 4.69315 |
| 1966 | 4.58243 |
| 1965 | 4.45824 |
| 1964 | 4.32382 |
| 1963 | 4.19617 |
| 1962 | 4.07193 |
| 1961 | 3.94185 |
| 1960 | 3.81079 |