Chart -Worldwide Facebook Users By Region & Country, 2010-2014

Growth in Facebook users will follow a similar pattern. eMarketer forecasts that Facebook will have nearly 826 million users around the world this year, up from 650.7 million in 2011. The 2012 figure will represent 58.8% of social network users, 36.4% of internet users and just under 12% of the total worldwide population.
Read the rest at eMarketer.