What do Pittsburgh, Dallas, and Knoxville have in common? According to our research, not much.  But recent findings from the Brookings Institution show that these three cities are the only major metropolitan areas in the United States that are experiencing an economic recovery since the recession ended in 2009. Using GDP per capita and employment figures, Brookings calculated the "overall economic performance index" of 76 American cities to determine which had officially emerged from the recession. Knoxville, the smallest city of the three with an economy rooted in manufacturing, is again experiencing growth rates in GDP and employment levels equal to or higher than their peaks since 2007. Knoxville's Mayor  Madeline Rogero discusses the city's road to recovery.