These charts record the number of earthquakes each year.

This chart is for Quake Magnitude 4+

Quake Magnitude 5+

Quake Magnitude 6+

Quake Magnitude 7+

Quake Magnitude 8+

As we can see from these graphs, there are increases in the more powerful earthquakes. And we are only in April of 2010.

source

dlindquist.com