No, that is drone sightings, period. Many of which are really unidentified*, model aircraft (yes, model aircraft reports are lumped in with drone sightings now and a surprising percentage of drone sightings are fixed wing, including from CalFire), in bizarre locations/altitudes (think altitudes that begin with 'FL'), or just seen by people on the ground (yes, it includes reports by random people on the ground not just pilots). Even more interesting is how few sightings from aircraft need or involve evasive maneuvers. It is one of the most meaningless statistics out there and is completely independent of how safely they are being operated, but the numbers should roughly correlate to the drone population and in fact they do. What is not expected is such an increase in sightings and flying drone population with no increase in fatalities (it went from 0 to 0 between 2014 and 2015).
*In reading ASRS reports, drones seem to have replaced UFOs. Another interesting ASRS report from this year was an ATP self-reporting that he flew his drone up to 47 feet AGL but was within 5 miles of a small airport.