According to Wired's DangerRoom blog the US military has launched 333 drone strikes so far this year in Afghanistan, the highest total ever. It's also about the same number of drone strikes as the CIA has launched in neighbouring Pakistan over the last eight years.
For comparison, US drone strikes in Afghanistan totalled 255 in 2009, 278 in 2010 and 294 in 2011.
The US military has 61 Predator and Reaper combat air patrols in Afghanistan, each with three or four remotely-piloted vehicles. In comparison, the CIA is believed to operate a total of 30-35 drones and is looking to purchase another 10.