| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | 5.02289 |
| 2021 | 4.88893 |
| 2020 | 4.81791 |
| 2019 | 4.80911 |
| 2018 | 4.75904 |
| 2017 | 4.64244 |
| 2016 | 4.57724 |
| 2015 | 4.54198 |
| 2014 | 4.52351 |
| 2013 | 4.65548 |
| 2012 | 4.92487 |
| 2011 | 5.21357 |
| 2010 | 5.54647 |
| 2009 | 5.93393 |
| 2008 | 6.29808 |
| 2007 | 6.60544 |
| 2006 | 6.85674 |
| 2005 | 7.01996 |
| 2004 | 7.09285 |
| 2003 | 7.12611 |
| 2002 | 7.14659 |
| 2001 | 7.16316 |
| 2000 | 7.1952 |
| 1999 | 7.27685 |
| 1998 | 7.36947 |
| 1997 | 7.46275 |
| 1996 | 7.58098 |
| 1995 | 7.69323 |
| 1994 | 7.77944 |
| 1993 | 7.81364 |
| 1992 | 7.7426 |
| 1991 | 7.62762 |
| 1990 | 7.55444 |
| 1989 | 7.51182 |
| 1988 | 7.51819 |
| 1987 | 7.52613 |
| 1986 | 7.46515 |
| 1985 | 7.36628 |
| 1984 | 7.25781 |
| 1983 | 7.1471 |
| 1982 | 7.10591 |
| 1981 | 7.1641 |
| 1980 | 7.24171 |
| 1979 | 7.28097 |
| 1978 | 7.30373 |
| 1977 | 7.36184 |
| 1976 | 7.44387 |
| 1975 | 7.5319 |
| 1974 | 7.6395 |
| 1973 | 7.77378 |
| 1972 | 7.89332 |
| 1971 | 7.96531 |
| 1970 | 8.02474 |
| 1969 | 8.12762 |
| 1968 | 8.27259 |
| 1967 | 8.41289 |
| 1966 | 8.5446 |
| 1965 | 8.63419 |
| 1964 | 8.58781 |
| 1963 | 8.39224 |
| 1962 | 8.13604 |
| 1961 | 7.89149 |
| 1960 | 7.68282 |