Freight Facts and Figures 2008
"The Nation’s 114 million households, 7.6 million business establishments, and 88,000
government units are part of an enormous economy that demands the movement of
freight. The U.S. Gross Domestic Product (GDP) is expected to grow, on average, almost 3percent per year between now and 2035, resulting in even greater demand for freight transportation. This growth will be driven by a population that is expected to increase from 300 million people in 2006 to 380 million in 2035..."