Comment by e12e

I'm more interested in what those 20 movies are. I found:

http://www.boxofficemojo.com/yearly/chart/?yr=1981

   1 Raiders of the Lost Ark
   2 On Golden Pond
   3 Superman II
   4 Arthur
   5 Stripes
   6 The Cannonball Run
   7 Chariots of Fire
   8 For Your Eyes Only
   9 The Four Seasons
  10 Time Bandits

Of which I guess 2, 3, 8 isn't original.

http://www.boxofficemojo.com/yearly/chart/?yr=2:w014

   1 American Sniper
   2 The Hunger Games: Mockingjay - Part 1
   3 Guardians of the Galaxy
   4 Captain America: The Winter Soldier
   5 The LEGO Movie
   6 The Hobbit: The Battle of the Five Armies
   7 Transformers: Age of Extinction
   8 Maleficent
   9 X-Men: Days of Future Past
  10 Big Hero 6

Of which only 10 is original.