Logistics costs for U.S. businesses rose to $1.39 trillion in 2013, a 2.3 percent increase over the previous year, according to the 25th Annual State of Logistics Report released by the Council of Supply Chain Management Professionals.   Logistics costs as a percentage of U.S. gross domestic product declined for the second year in a row, indicating that the logistics sector is not keeping pace with the growth in the overall economy, the report said. This year's report reveals that the transportation sector grew only 2.0 percent, with all modes experiencing modest gains in revenue. Despite the weak revenue picture, tonnage was up due to heavier average loads per shipment.