In Your House 13: The Final Four (1997)
In Your House 16: Canadian Stampede (1997)
Pretty huge gap between those and then 2000. Once you get to 2000 and 2001, you can't really go wrong with the PPV's (Backlash 2000 is THE pinnacle of non WM shows in general, not just the AE. Better than most WM shows too). The rest from 97 though to the end of 99 were typically one match shows.