From White Zombie to Zombieland, a nice diagram of zombies in the movies.
A nice graphic timeline from Kevin Ha of Visual.ly. Note the lack of good zombie movies in the 1990’s. That’s true for most horror films. The 90’s kinda sucked for all horror offerings. If this list got updated, there would be a notable expansion in the 2010’s, and you would see the budgets explode, as I think World War Z would mess the curve up. Curiously no budgets placed for the movies in the 2000’s. I like that Ha establishes the rules of zombies for each decade.