It is like hurricanes.
Remember the 2004 and 2005 seasons?
Charlie, Ivan, Dennis, Katrina, Rita, Wilma, etc.
And El Nino, such as 1988 and 1997.
Meteorologic and geophysical changes happen in cycles and can vary in time.
We are past the last Hurricane cycle, but we have entered a point where it is not the weather, but the earth itself that is going through changes.
That being said, I do believe there will be more earthquakes (And let's not forget The Indian Ocean Earthquake and the China Earthquake) for a time, then the earth will settle back down, and we'll just have the few and far between bad earthquakes.