I just looked up FileMaker in the Wikipedia for the first time and found, among other good things, a chronology of all FileMaker releases. It's a good tidbit. I did a bottomline edit to just show the major releases here:
Glenn Koenig has written a fascinating behind the scenes story about the early years of FileMaker based on a phone interview with one of the original four founders of Nashoba Systems, Spec Bowers, called The Origin of FileMaker Pro.