John Knoll broke it down in an interview with Slashfilm last year when asked how many vfx shots were in Rogue One:
“It’s about 1,700. The original A New Hope was about 360. Empire Strikes Back was about 700. Return of the Jedi was about 900 or 950. Episode I was 1,900-something, 1950, I think. Episode II was 2,200. Episode III was 2,400. Episode VII was, I think just under 2,000. So we’re kind of in the middle.”