In 2009, Apple sold more iPhones than it did in 2007 and 2008 combined. In 2010, Apple sold more iPhones than it did in 2007, 2008, and 2009 combined. Last year, Apple sold 93.1 million iPhones, slightly more than it did in in 2007, 2008, 2009, and 2010 combined. The pattern continued.
In 2012, Apple will need to sell roughly 180 million iPhones in order for the pattern to continue. A tough feat, but so is 93.1 million.
