Six here, Six there, six hangar queens, Six on exercise, 12 on the OCU (min), 4 on the OEU plus god knowns how many on depth servicing makes quite a hole in of that one hundred.
Typhoon93, read something about the US Army's attempt to do a deep penetration AH-64 raid in Iraq during 2003. They did take a bit of a shoeing. One Apache shot down and most of the others damaged.