A list of the largest grossing films can be found here, but gladly the site has the sophistication to post a list that is adjusted-for-inflation.
Of course, one could make further adjustments for the sector-specific inflation, population, and much more, as this excellent site points out. It turns out that there is no definitive adjustment(s) that can be made...just better and worst choices given the question you ask.
If you'd like to adjust any wage, return or any other current dollar amount for inflation as measured by the CPI, the BLS has a page that may amuse you here.