| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 6.96447 |
| 2021 | 6.99163 |
| 2020 | 7.02829 |
| 2019 | 7.09323 |
| 2018 | 7.17201 |
| 2017 | 7.22021 |
| 2016 | 7.18227 |
| 2015 | 7.15201 |
| 2014 | 7.22645 |
| 2013 | 7.30379 |
| 2012 | 7.3485 |
| 2011 | 7.44365 |
| 2010 | 7.4401 |
| 2009 | 7.21394 |
| 2008 | 6.91073 |
| 2007 | 6.62033 |
| 2006 | 6.31914 |
| 2005 | 6.0499 |
| 2004 | 5.88313 |
| 2003 | 5.79335 |
| 2002 | 5.75875 |
| 2001 | 5.78459 |
| 2000 | 5.87517 |
| 1999 | 6.0164 |
| 1998 | 6.15626 |
| 1997 | 6.2374 |
| 1996 | 6.24302 |
| 1995 | 6.18456 |
| 1994 | 6.08333 |
| 1993 | 5.98277 |
| 1992 | 5.92399 |
| 1991 | 5.90758 |
| 1990 | 5.91992 |
| 1989 | 5.95128 |
| 1988 | 5.96587 |
| 1987 | 5.93307 |
| 1986 | 5.87429 |
| 1985 | 5.78339 |
| 1984 | 5.58939 |
| 1983 | 5.28546 |
| 1982 | 4.93979 |
| 1981 | 4.60441 |
| 1980 | 4.33529 |
| 1979 | 4.23962 |
| 1978 | 4.33989 |
| 1977 | 4.51989 |
| 1976 | 4.71011 |
| 1975 | 4.90417 |
| 1974 | 5.04213 |
| 1973 | 5.09659 |
| 1972 | 5.13039 |
| 1971 | 5.1468 |
| 1970 | 5.11364 |
| 1969 | 5.05158 |
| 1968 | 4.97206 |
| 1967 | 4.87399 |
| 1966 | 4.76784 |
| 1965 | 4.65219 |
| 1964 | 4.5378 |
| 1963 | 4.43798 |
| 1962 | 4.33879 |
| 1961 | 4.2305 |
| 1960 | 4.11859 |