“The government has said that the U.S. economy, as measured by the gross domestic product, or GDP, grew at an annual rate of 2.4 percent in 2014, up from 2.2 percent in 2013. In the first quarter 2015 Bankrate Economic Indicator survey of leading economists, we asked: At what rate do you expect the economy to be growing four quarters from now? What factors will be driving that growth?”