http://www.marinelink.com/news/u-s-flag-carriage-inches-upward-again-in-june/u-s-flag-carriage-inches-upward-again-in-june307606
U.S.-Flag Carriage Inches Upward Again In June
U.S.-Flag shipments of dry-bulk cargo on the Great Lakes in June totaled 11.4 million net tons, a decrease of 3 percent compared to a year ago.