| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 6.47317 |
| 2021 | 6.63774 |
| 2020 | 6.81191 |
| 2019 | 6.87108 |
| 2018 | 6.86132 |
| 2017 | 6.87976 |
| 2016 | 6.91194 |
| 2015 | 6.95391 |
| 2014 | 7.01661 |
| 2013 | 7.09425 |
| 2012 | 7.1408 |
| 2011 | 7.09854 |
| 2010 | 7.0696 |
| 2009 | 7.15542 |
| 2008 | 7.25031 |
| 2007 | 7.30758 |
| 2006 | 7.39515 |
| 2005 | 7.39326 |
| 2004 | 7.18471 |
| 2003 | 6.87885 |
| 2002 | 6.57199 |
| 2001 | 6.26731 |
| 2000 | 6.00466 |
| 1999 | 5.84045 |
| 1998 | 5.75379 |
| 1997 | 5.72654 |
| 1996 | 5.76616 |
| 1995 | 5.87379 |
| 1994 | 6.03835 |
| 1993 | 6.21368 |
| 1992 | 6.33985 |
| 1991 | 6.39167 |
| 1990 | 6.37977 |
| 1989 | 6.32426 |
| 1988 | 6.26133 |
| 1987 | 6.23455 |
| 1986 | 6.25144 |
| 1985 | 6.29579 |
| 1984 | 6.35756 |
| 1983 | 6.39881 |
| 1982 | 6.3812 |
| 1981 | 6.32493 |
| 1980 | 6.21981 |
| 1979 | 5.99257 |
| 1978 | 5.64093 |
| 1977 | 5.24362 |
| 1976 | 4.86518 |
| 1975 | 4.57016 |
| 1974 | 4.47173 |
| 1973 | 4.58962 |
| 1972 | 4.7971 |
| 1971 | 5.022 |
| 1970 | 5.25531 |
| 1969 | 5.43223 |
| 1968 | 5.52654 |
| 1967 | 5.59588 |
| 1966 | 5.6383 |
| 1965 | 5.61873 |
| 1964 | 5.55413 |
| 1963 | 5.46045 |
| 1962 | 5.3443 |
| 1961 | 5.22379 |
| 1960 | 5.09376 |