| Year | Severity greater than or equal 1.5 | Magnitude greater than or equal 5 |
|---|---|---|
| 1990 | 2 | 6 |
| 1991 | 3 | 6 |
| 1992 | 5 | 5 |
| 1993 | 3 | 2 |
| 1994 | 1 | 2 |
| 1995 | 3 | 6 |
| 1996 | 0 | 0 |
| 1997 | 0 | 1 |
| 1998 | 4 | 11 |
| 1999 | 6 | 9 |
| 2000 | 3 | 5 |
| 2001 | 5 | 6 |
| 2002 | 5 | 6 |
| 2003 | 1 | 9 |
| 2004 | 5 | 6 |
| 2005 | 7 | 11 |
| 2006 | 8 | 13 |
| 2007 | 3 | 12 |
| 2008 | 5 | 8 |
| 2009 | 5 | 6 |
| 2010 | 11 | 15 |
| 2011 | 1 | 2 |
| 2012 | 3 | 3 |
| 2013 | 7 | 6 |
| 2014 |