| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 3.69303 |
| 2021 | 3.79731 |
| 2020 | 3.85315 |
| 2019 | 3.84608 |
| 2018 | 3.80523 |
| 2017 | 3.77059 |
| 2016 | 3.72338 |
| 2015 | 3.65468 |
| 2014 | 3.56696 |
| 2013 | 3.44883 |
| 2012 | 3.33405 |
| 2011 | 3.23997 |
| 2010 | 3.16459 |
| 2009 | 3.0884 |
| 2008 | 3.01116 |
| 2007 | 2.95768 |
| 2006 | 2.90783 |
| 2005 | 2.84172 |
| 2004 | 2.75655 |
| 2003 | 2.67273 |
| 2002 | 2.60165 |
| 2001 | 2.52169 |
| 2000 | 2.45015 |
| 1999 | 2.40717 |
| 1998 | 2.40355 |
| 1997 | 2.44945 |
| 1996 | 2.50145 |
| 1995 | 2.53285 |
| 1994 | 2.50916 |
| 1993 | 2.4312 |
| 1992 | 2.36073 |
| 1991 | 2.30014 |
| 1990 | 2.21627 |
| 1989 | 2.11503 |
| 1988 | 2.02616 |
| 1987 | 1.9571 |
| 1986 | 1.88125 |
| 1985 | 1.80124 |
| 1984 | 1.72602 |
| 1983 | 1.65619 |
| 1982 | 1.59152 |
| 1981 | 1.51793 |
| 1980 | 1.45383 |
| 1979 | 1.39562 |
| 1978 | 1.33314 |
| 1977 | 1.2853 |
| 1976 | 1.24578 |
| 1975 | 1.20809 |
| 1974 | 1.17981 |
| 1973 | 1.15828 |
| 1972 | 1.15004 |
| 1971 | 1.15187 |
| 1970 | 1.15102 |
| 1969 | 1.15126 |
| 1968 | 1.14692 |
| 1967 | 1.13375 |
| 1966 | 1.10271 |
| 1965 | 1.05264 |
| 1964 | 0.995097 |
| 1963 | 0.947952 |
| 1962 | 0.937129 |
| 1961 | 0.937643 |
| 1960 | 0.93595 |