| 年份 | 保加利亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | 0.07254 |
| 2016 | 0.06634 |
| 2015 | 0.09488 |
| 2014 | 0.07273 |
| 2013 | 0.10367 |
| 2012 | 0.13946 |
| 2011 | 0.18141 |
| 2010 | 0.50078 |
| 2009 | 1.24347 |
| 2008 | 1.47006 |
| 2007 | 1.76037 |
| 2006 | 1.9583 |
| 2005 | 1.98032 |
| 2004 | 1.83836 |
| 2003 | 1.90063 |
| 2002 | 1.9939 |
| 2001 | 1.95599 |
| 2000 | 2.47662 |
| 1999 | 2.65581 |
| 1998 | 2.74495 |
| 1997 | 2.65704 |
| 1996 | 2.81845 |
| 1995 | 3.0382 |
| 1994 | 3.68803 |
| 1993 | 4.39971 |
| 1992 | 3.65493 |
| 1991 | 2.755 |
| 1990 | 1.86106 |
| 1989 | 1.78985 |
| 1988 | 1.49202 |
| 1987 | 1.22984 |
| 1986 | 0.89289 |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |