Found this blurb on foul balls / pitches thrown in a Travis Sawchik article…
“There were 129,954 foul balls hit last season in total, trailing only 2019 (which had the most total pitches thrown on record because of the elevated run-scoring environment).
For context, there were more than 15,000 additional foul balls last season than in 1998, the first year there were 30 MLB teams. That's a 14% rise in foul balls even though total pitches thrown has only grown by 1.6%.“