| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | 0.07826 |
| 2016 | 0.07405 |
| 2015 | 0.11077 |
| 2014 | 0.09774 |
| 2013 | 0.12851 |
| 2012 | 0.16285 |
| 2011 | 0.21993 |
| 2010 | 0.61996 |
| 2009 | 1.59498 |
| 2008 | 1.81689 |
| 2007 | 2.14923 |
| 2006 | 2.31537 |
| 2005 | 2.33607 |
| 2004 | 2.26242 |
| 2003 | 2.27196 |
| 2002 | 2.50475 |
| 2001 | 2.37017 |
| 2000 | 3.12592 |
| 1999 | 3.22326 |
| 1998 | 3.30097 |
| 1997 | 3.35001 |
| 1996 | 3.54231 |
| 1995 | 3.90631 |
| 1994 | 4.84076 |
| 1993 | 5.52894 |
| 1992 | 5.01391 |
| 1991 | 4.82355 |
| 1990 | 3.2753 |
| 1989 | 2.8167 |
| 1988 | 2.241 |
| 1987 | 1.96528 |
| 1986 | 1.96084 |
| 1985 | 1.8669 |
| 1984 | 1.83044 |
| 1983 | 1.77866 |
| 1982 | 1.89168 |
| 1981 | 1.99042 |
| 1980 | 2.11077 |
| 1979 | 2.05711 |
| 1978 | 2.18066 |
| 1977 | 1.94945 |
| 1976 | 1.99296 |
| 1975 | 3.14616 |
| 1974 | 4.48994 |
| 1973 | 5.17119 |
| 1972 | 5.70415 |
| 1971 | 5.80593 |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |