 A PricewaterhouseCoopers study released in 2009, which surveyed the 2008 GDP of the top cities in the world, calculated Karachi’s GDP (PPP) to be $191 billion as of 2014 It confirmed Karachi’s status as Pakistan’s largest economy, well ahead of the next two biggest cities Lahore and Faisalabad, which had a reported GDP (PPP) in 2008 of $40 billion and $14 billion, respectively.