Don't underestimate the power of the Force ... or inflation. Box-office analysts predict that in dollar terms, The Force Awakens will be the biggest earning movie with Star Wars in its name. But such measurements almost always fail to account for inflation [bloomberg.com]. In real dollar terms, none of the sequels/prequels have surpassed the original Star Wars (later subtitled Episode IV: A New Hope).
A New Hope was a smash success financially, a bona fide blockbuster in the dawn of the blockbuster era. With cinemas screening the original Star Wars for most of 1977 and 1978, the film garnered $512 million in ticket sales. What’s truly incredible about that figure is that movie tickets in 1977 cost just $2.23 on average. That means about 230 million people went to see the film, slightly more than the population of the U.S. at the time.