Apr 21, 2010. /Lesprom Network/. U.S. total printing-writing paper shipments increased 12% in March compared to March 2009 - the fifth consecutive year-ago increase and the second double-digit year-ago increase, American Forest and Paper Association reported. All four of the major printing-writing grades posted increases compared to last March, and three recorded double-digit growth when compared to 2009. U.S. purchases (shipments + imports - exports) of printing-writing papers also increased in March, up 8% versus year-ago March. Total printing-writing paper inventory levels decreased slightly from February 2010, down 1%. The American Forest and Paper Association is the national trade association of the forest products industry, representing pulp, paper, and wood products manufacturers, and forest landowners.