The recent forecast is that the total U.S. staffing industry will grow 6% in 2015 and 5% in 2016, to reach a size of billion. The forecast is based on the U.S. GDP growth of 2.9% (the highest in a decade) in 2015 and 2.7% in 2016. The U. S. GDP growth will be responsible for the increase in staffing firm revenues in the next two years and will be accelerated by inc...