| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 4.66224 |
| 2021 | 4.70932 |
| 2020 | 4.76137 |
| 2019 | 4.8212 |
| 2018 | 4.86974 |
| 2017 | 4.91392 |
| 2016 | 4.97895 |
| 2015 | 5.07674 |
| 2014 | 5.21703 |
| 2013 | 5.36819 |
| 2012 | 5.4765 |
| 2011 | 5.52565 |
| 2010 | 5.49619 |
| 2009 | 5.37277 |
| 2008 | 5.19583 |
| 2007 | 5.01772 |
| 2006 | 4.85991 |
| 2005 | 4.75313 |
| 2004 | 4.69162 |
| 2003 | 4.61008 |
| 2002 | 4.50175 |
| 2001 | 4.43831 |
| 2000 | 4.4064 |
| 1999 | 4.41126 |
| 1998 | 4.53667 |
| 1997 | 4.76348 |
| 1996 | 5.01526 |
| 1995 | 5.31193 |
| 1994 | 5.65451 |
| 1993 | 5.98004 |
| 1992 | 6.26619 |
| 1991 | 6.50906 |
| 1990 | 6.67814 |
| 1989 | 6.77522 |
| 1988 | 6.84153 |
| 1987 | 6.90089 |
| 1986 | 6.96113 |
| 1985 | 7.03882 |
| 1984 | 7.16882 |
| 1983 | 7.32689 |
| 1982 | 7.50469 |
| 1981 | 7.71979 |
| 1980 | 7.93538 |
| 1979 | 8.12164 |
| 1978 | 8.24691 |
| 1977 | 8.26151 |
| 1976 | 8.22593 |
| 1975 | 8.21834 |
| 1974 | 8.23384 |
| 1973 | 8.2954 |
| 1972 | 8.34554 |
| 1971 | 8.30675 |
| 1970 | 8.21634 |
| 1969 | 8.0986 |
| 1968 | 7.97885 |
| 1967 | 7.95607 |
| 1966 | 8.06244 |
| 1965 | 8.21776 |
| 1964 | 8.34964 |
| 1963 | 8.45248 |
| 1962 | 8.56722 |
| 1961 | 8.69674 |
| 1960 | 8.83254 |