| 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 |