As a further update, consider this search:

https://earthquake.usgs.gov/earthquakes/map/?extent=16.80454...

All quakes 7 and above from 2011-01-01 until today. Some stats:

Total quakes - 16

Number of quakes in March - 6

Number of quakes in April - 3

Number of quakes in February - 2

Months with 1 quake - 5, 7, 8, 10, 12

Probability of quake in March - 37.5%

Probability of quake in March (+- 1 month) - 68.75%