| 年份 | 保加利亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 13.9959 | 
| 2021 | 13.9947 | 
| 2020 | 14.019 | 
| 2019 | 14.062 | 
| 2018 | 14.0964 | 
| 2017 | 14.1014 | 
| 2016 | 14.0949 | 
| 2015 | 14.1108 | 
| 2014 | 14.1436 | 
| 2013 | 14.1157 | 
| 2012 | 13.9936 | 
| 2011 | 13.8675 | 
| 2010 | 13.746 | 
| 2009 | 13.6081 | 
| 2008 | 13.523 | 
| 2007 | 13.5087 | 
| 2006 | 13.5676 | 
| 2005 | 13.7394 | 
| 2004 | 14.0247 | 
| 2003 | 14.3877 | 
| 2002 | 14.7869 | 
| 2001 | 15.2089 | 
| 2000 | 15.6267 | 
| 1999 | 16.0452 | 
| 1998 | 16.5197 | 
| 1997 | 17.0317 | 
| 1996 | 17.5257 | 
| 1995 | 18.0128 | 
| 1994 | 18.5213 | 
| 1993 | 19.0121 | 
| 1992 | 19.4818 | 
| 1991 | 19.9377 | 
| 1990 | 20.3399 | 
| 1989 | 20.7029 | 
| 1988 | 21.0079 | 
| 1987 | 21.2157 | 
| 1986 | 21.4033 | 
| 1985 | 21.634 | 
| 1984 | 21.913 | 
| 1983 | 22.2106 | 
| 1982 | 22.4235 | 
| 1981 | 22.5605 | 
| 1980 | 22.6902 | 
| 1979 | 22.8041 | 
| 1978 | 22.901 | 
| 1977 | 22.9552 | 
| 1976 | 22.9844 | 
| 1975 | 23.014 | 
| 1974 | 23.0057 | 
| 1973 | 23.0079 | 
| 1972 | 23.0868 | 
| 1971 | 23.2004 | 
| 1970 | 23.311 | 
| 1969 | 23.388 | 
| 1968 | 23.4699 | 
| 1967 | 23.6551 | 
| 1966 | 23.9262 | 
| 1965 | 24.2306 | 
| 1964 | 24.5929 | 
| 1963 | 25.0144 | 
| 1962 | 25.4372 | 
| 1961 | 25.8364 | 
| 1960 | 26.1886 |