Flight operations data for major US airports from 1989-2010 plus 2011(partial). Data retrieved from the FAA on April 11 2011.
The data is in .csv format and looks like the following:

Facility,Calendar Year,Air Carrier – Itinerant,Air Taxi – Itinerant,General Aviation – Itinerant,Military – Itinerant,Total – Itenerant,Civil – Local,Military – Local,Total – Local,Total Operations
ABQ,1989,19162,9605,18452,7660,54879,468,1222,1690,56569