| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 4.65207 |
| 2021 | 4.61752 |
| 2020 | 4.55289 |
| 2019 | 4.44481 |
| 2018 | 4.32613 |
| 2017 | 4.23154 |
| 2016 | 4.15694 |
| 2015 | 4.13046 |
| 2014 | 4.14897 |
| 2013 | 4.13056 |
| 2012 | 4.05491 |
| 2011 | 4.01228 |
| 2010 | 3.99464 |
| 2009 | 3.99709 |
| 2008 | 4.11792 |
| 2007 | 4.34751 |
| 2006 | 4.59676 |
| 2005 | 4.88125 |
| 2004 | 5.20573 |
| 2003 | 5.51078 |
| 2002 | 5.77802 |
| 2001 | 6.0058 |
| 2000 | 6.15912 |
| 1999 | 6.23405 |
| 1998 | 6.27299 |
| 1997 | 6.29453 |
| 1996 | 6.31099 |
| 1995 | 6.35233 |
| 1994 | 6.44808 |
| 1993 | 6.57032 |
| 1992 | 6.71025 |
| 1991 | 6.87344 |
| 1990 | 7.03018 |
| 1989 | 7.16333 |
| 1988 | 7.24126 |
| 1987 | 7.21296 |
| 1986 | 7.13838 |
| 1985 | 7.09452 |
| 1984 | 7.07736 |
| 1983 | 7.10975 |
| 1982 | 7.14734 |
| 1981 | 7.12587 |
| 1980 | 7.07091 |
| 1979 | 7.00159 |
| 1978 | 6.92353 |
| 1977 | 6.90939 |
| 1976 | 6.98545 |
| 1975 | 7.08058 |
| 1974 | 7.14441 |
| 1973 | 7.19087 |
| 1972 | 7.25936 |
| 1971 | 7.34394 |
| 1970 | 7.43517 |
| 1969 | 7.54216 |
| 1968 | 7.67734 |
| 1967 | 7.80611 |
| 1966 | 7.89088 |
| 1965 | 7.96528 |
| 1964 | 8.11933 |
| 1963 | 8.33496 |
| 1962 | 8.53321 |
| 1961 | 8.73193 |
| 1960 | 8.89312 |