Between 2009 and 2012, Philadelphia’s GDP grew by 9.4 percent, ranking 9th out of the top 10 of the largest U.S. metros. It exceeded Los Angeles which had GDP growth that was only 7.5 percent, according to the Atlantic article.
Philadelphia’s GDP in 2012 was $364 billion, surpassing both Boston and Atlanta, but ranking it only 8th out of the top 10. In comparison, the average GDP of the top metro areas in 2012 was $482.3 billion. That figure however does not include New York, which is in a caliber of its own at nearly 1.4 trillion.