| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 5.46713 |
| 2021 | 5.26665 |
| 2020 | 5.04834 |
| 2019 | 4.89399 |
| 2018 | 4.792 |
| 2017 | 4.72853 |
| 2016 | 4.71719 |
| 2015 | 4.757 |
| 2014 | 4.84211 |
| 2013 | 4.93176 |
| 2012 | 4.9761 |
| 2011 | 4.94566 |
| 2010 | 4.84395 |
| 2009 | 4.69717 |
| 2008 | 4.53856 |
| 2007 | 4.40954 |
| 2006 | 4.31753 |
| 2005 | 4.25457 |
| 2004 | 4.20122 |
| 2003 | 4.13459 |
| 2002 | 4.05281 |
| 2001 | 3.97537 |
| 2000 | 3.89735 |
| 1999 | 3.78425 |
| 1998 | 3.63744 |
| 1997 | 3.47892 |
| 1996 | 3.30827 |
| 1995 | 3.14062 |
| 1994 | 3.06556 |
| 1993 | 3.10905 |
| 1992 | 3.18422 |
| 1991 | 3.25813 |
| 1990 | 3.33292 |
| 1989 | 3.35265 |
| 1988 | 3.30245 |
| 1987 | 3.24864 |
| 1986 | 3.19136 |
| 1985 | 3.11062 |
| 1984 | 3.01989 |
| 1983 | 2.92869 |
| 1982 | 2.84008 |
| 1981 | 2.74738 |
| 1980 | 2.64897 |
| 1979 | 2.54847 |
| 1978 | 2.45359 |
| 1977 | 2.36148 |
| 1976 | 2.26925 |
| 1975 | 2.18701 |
| 1974 | 2.10479 |
| 1973 | 2.015 |
| 1972 | 1.93686 |
| 1971 | 1.87414 |
| 1970 | 1.81696 |
| 1969 | 1.77744 |
| 1968 | 1.75959 |
| 1967 | 1.75788 |
| 1966 | 1.76788 |
| 1965 | 1.77779 |
| 1964 | 1.78109 |
| 1963 | 1.76341 |
| 1962 | 1.71632 |
| 1961 | 1.62996 |
| 1960 | 1.50275 |