Annual growth over that period has been ~2.2%, sometimes a little faster, sometimes a little slower. The doubling from 50 in 1982 to 100 in 2017 (35 years) averages to 2% per year.
Even if the overall productivity boost due to AI "only" turns out to be 40%, the lowest among your numbers, it's equivalent to 17 years of growth at 2% per year.
https://fred.stlouisfed.org/series/OPHNFB
Annual growth over that period has been ~2.2%, sometimes a little faster, sometimes a little slower. The doubling from 50 in 1982 to 100 in 2017 (35 years) averages to 2% per year.
Even if the overall productivity boost due to AI "only" turns out to be 40%, the lowest among your numbers, it's equivalent to 17 years of growth at 2% per year.
That's not exactly small.