[Philip Lelyveld comment: this article contains many useful statistics. It is updated/corrected from a previous article.]

[Film Journal]
At the end of first half of 2011, there were more than 40,000 digital screens all over the world. Important markets like the USA and the countries of Western Europe had already digitized around half of their total screens. In Latin America, the proportion was lower: an average of 21%. Unlike the rest of the world (with the exception of Eastern Europe), virtually all DCI digital projectors south of Río Bravo are 3D-ready; that’s why almost all the films featured on this kind of screen are three-dimensional Hollywood entertainment.
In July 2011, Latin America (20 countries and six autonomous Caribbean islands) had almost 2,300 DCI digital screens (more than 174% above the total one year ago, and more than 386% above the total two years ago), distributed among 1,200 complexes (where more than half have two or more projectors). The average density at these complexes is two digital screens. …
Mexico is the leading country in the Latin American digital rollout: 52.5% of regional DCI projectors are installed in the Aztec country, the fifth-largest national cinema exhibition market in the world. Brazil has 17.5% of Latin America’s d-screens, while Colombia has displaced Argentina at fourth place, with 150 and 130 DCI projectors, respectively. …
Read the full article here: http://www.filmjournal.com/filmjournal/content_display/news-and-features/features/cinemas/e3i61f2bfa2d77f2f132878a3c266236ad3