A Blast from the Past! Admission & Diversity Stats from 1988 vs 2018 for HYP, Amherst, Brown, etc.

Sometime in early 1990s or so they revamped ACT scoring also, so any ACT score from 1988 would need to be increased by 2 points to compare to current scores. I am assuming the ACT scores you list are the averages from 1988 for those schools?