The September 2007 Sumatra earthquake was the largest in 2007 with an 8.4 on the moment magnitude scale.
The 2007 Solomon Islands earthquake caused a significant tsunami that killed 52 people.
Other significant earthquakes in 2007 struck Chile and Japan.
Note that an increase in detected earthquake numbers does not necessarily represent an increase in earthquakes per se.
Population increase, habitation spread, and advances in earthquake detection technology all contribute to higher earthquake numbers being recorded over time.