| Year | Max mag. | Total hits |
|---|---|---|
| 1900 | 7.7 | 1 |
| 2007 | 7.4 | 54 |
| 1906 | 7.2 | 1 |
| 1969 | 7.2 | 2 |
| 1953 | 7.1 | 1 |
| 1997 | 7 | 70 |
| 1957 | 6.9 | 1 |
| 1910 | 6.9 | 1 |
| 1929 | 6.7 | 1 |
| 1952 | 6.7 | 1 |
| 1932 | 6.6 | 1 |
| 1988 | 6.6 | 77 |
| 1946 | 6.5 | 1 |
| 2014 | 6.5 | 33 |
| 2015 | 6.5 | 65 |
| 2009 | 6.4 | 31 |
| 1977 | 6.4 | 19 |
| 1968 | 6.2 | 1 |
| 1986 | 6.2 | 33 |
| 2000 | 6.2 | 27 |
| 1974 | 6.1 | 17 |
| 1975 | 6.1 | 20 |
| 2006 | 6.1 | 49 |
| 2013 | 6 | 27 |
| 1993 | 6 | 23 |
| 1983 | 6 | 15 |
| 1994 | 5.9 | 28 |
| 1970 | 5.9 | 1 |
| 2016 | 5.9 | 22 |
| 2017 | 5.8 | 40 |
| 2008 | 5.8 | 46 |
| 2004 | 5.8 | 29 |
| 1996 | 5.8 | 27 |
| 1989 | 5.8 | 29 |
| 1984 | 5.7 | 16 |
| 1987 | 5.7 | 14 |
| 1995 | 5.7 | 19 |
| 1976 | 5.7 | 17 |
| 1978 | 5.7 | 13 |
| 1979 | 5.6 | 13 |
| 2001 | 5.6 | 17 |
| 1990 | 5.6 | 34 |
| 1991 | 5.6 | 35 |
| 1999 | 5.6 | 26 |
| 2010 | 5.6 | 37 |
| 1985 | 5.5 | 12 |
| 1982 | 5.5 | 28 |
| 1967 | 5.5 | 1 |
| 1980 | 5.4 | 13 |
| 1998 | 5.4 | 28 |
| 2005 | 5.4 | 49 |
| 2003 | 5.3 | 16 |
| 2012 | 5.3 | 34 |
| 2011 | 5.2 | 32 |
| 1981 | 5.1 | 13 |
| 1973 | 5.1 | 17 |
| 2002 | 4.9 | 28 |
| 1992 | 4.9 | 19 |
| 2018 | 4.9 | 18 |