Roger
Here is the exact figure for last 5 years .
date-Jupt changing--6+quake for month
date--------------6+ quakes
03.01.2005---------33(15 days +or-)
6.06.2005-----------11
5.03.2006-----------13
6.07.2006-----------14
7.04.2007-----------33
7.08.2007-----------25
10.05.2008----------16
09.09.2008----------16
16.06.2009----------09
14.10.2009----------23
---------------------
total------------193 for 5 years
ie for 10 months ie 19.3 per month 6+ quakes
As per USGS average 150 quakes of 6+ occur per year .ie 12.5 per month
so 19.3 per month is far more than 12.5 per month average
Regards
Amit