How many documentaries are in the top 100 movies?

Neither the American Film Institute, BBC nor IMDb list any documentaries in their top 100 movies, as of 2015. Rotten Tomatoes lists one documentary in its list of the top 100 movies: "Man on Wire." It's ranked as the 61st best movie of all time.

James Marsh's 2008 documentary "Man on Wire" tells the story of Philippe Petit, a French man who walked across a tightrope stretched between the World Trade Center Twin Towers on Aug. 7, 1974, without any safety equipment. The documentary earns a perfect 100 percent approval rating from 153 different critics on Rotten Tomatoes. In 2015, the story was adapted into a biographical drama, "The Walk," starring Joseph Gordon-Levitt as Petit.