About 10 years ago it was probably closer to 80% IPAs. It was a big joke here that IPA stands for I Pretend (I’m not an) Alcoholic.
The only reason there is more on the market now is because we all stopped pretending the taste of motor oil with grapefruit gave us a better buzz.
Even now, most breweries will only seem to offer 4 varieties of IPAs, a pilsner/lager and a stout. Maybe an Amber but I feel the Mac & Jack’s copycat scene has mostly died out now.