Yes.

http://www.livingunderdrones.org/numbers/

There are no 100% solid estimates because of problems with reliable sources, but here are a couple of links to get you started.

http://natsec.newamerica.net/drones/pakistan/analysis

http://www.longwarjournal.org/multimedia/Yemen/code/Yemen-st...

http://www.thebureauinvestigates.com/category/projects/drone...