Jan 23, 2012. /Lesprom Network/. U.S. total printing-writing paper shipments decreased 7% in December compared to December 2010. All four major printing-writing grades posted decreases compared to last December. U.S. purchases (shipments + imports - exports) of printing-writing papers decreased 5% in December. Total printing-writing paper inventory levels increased 6% compared to November 2011, as the American Forest & Paper Association said in a press release received by Lesprom Network. The American Forest & Paper Association is the national trade association of the forest products industry, representing pulp, paper, packaging and wood products manufacturers, and forest landowners.