| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 4.79323 |
| 2021 | 4.69086 |
| 2020 | 4.62894 |
| 2019 | 4.59532 |
| 2018 | 4.73187 |
| 2017 | 5.01792 |
| 2016 | 5.31871 |
| 2015 | 5.66023 |
| 2014 | 6.05022 |
| 2013 | 6.41013 |
| 2012 | 6.71186 |
| 2011 | 6.9588 |
| 2010 | 7.12306 |
| 2009 | 7.20198 |
| 2008 | 7.24467 |
| 2007 | 7.27602 |
| 2006 | 7.29906 |
| 2005 | 7.32774 |
| 2004 | 7.40591 |
| 2003 | 7.49982 |
| 2002 | 7.59889 |
| 2001 | 7.72108 |
| 2000 | 7.8286 |
| 1999 | 7.90288 |
| 1998 | 7.9096 |
| 1997 | 7.7906 |
| 1996 | 7.62517 |
| 1995 | 7.50583 |
| 1994 | 7.4162 |
| 1993 | 7.38029 |
| 1992 | 7.35287 |
| 1991 | 7.26108 |
| 1990 | 7.14518 |
| 1989 | 7.03421 |
| 1988 | 6.92851 |
| 1987 | 6.8989 |
| 1986 | 6.97029 |
| 1985 | 7.05483 |
| 1984 | 7.08872 |
| 1983 | 7.09577 |
| 1982 | 7.1344 |
| 1981 | 7.19215 |
| 1980 | 7.25051 |
| 1979 | 7.32729 |
| 1978 | 7.43233 |
| 1977 | 7.52909 |
| 1976 | 7.58726 |
| 1975 | 7.63862 |
| 1974 | 7.73615 |
| 1973 | 7.87316 |
| 1972 | 8.01042 |
| 1971 | 8.14707 |
| 1970 | 8.24115 |
| 1969 | 8.2019 |
| 1968 | 8.01811 |
| 1967 | 7.76365 |
| 1966 | 7.49917 |
| 1965 | 7.26365 |
| 1964 | 7.11147 |
| 1963 | 7.06475 |
| 1962 | 7.10866 |
| 1961 | 7.22939 |
| 1960 | 7.43811 |