Star Wars dominated '99.
From
http://us.imdb.com/Sections/Years/1999/top-grossing
431,065,444 Star Wars: Episode I - The Phantom Menace
293,501,675 The Sixth Sense
245,823,397 Toy Story 2
205,399,422 Austin Powers: The Spy Who Shagged Me
171,383,253 The Matrix
171,085,177 Tarzan
155,247,825 The Mummy
152,149,590 Runaway Bride
140,530,114 The Blair Witch Project
140,015,224 Stuart Little
In '02 it took its fair share.
403,706,375 Spider-Man
339,104,919 The Lord of the Rings: The Two Towers
310,675,583 Star Wars: Episode II - Attack of the Clones
261,970,615 Harry Potter and the Chamber of Secrets
241,437,427 My Big Fat Greek Wedding
227,965,690 Signs
213,079,163 Austin Powers in Goldmember
190,418,803 Men in Black II
176,387,405 Ice Age
168,962,297 Chicago
Edit: With the exception of '02 which was an enormous genre year Star Wars has dominated the box-office every year a film was released. 2005 will depend on what else is out, of course. '03 is another good genre year. Plenty of good genre flicks already out with the best to come...