According to the latest report, steel, concrete, and asphalt PPIs all increased last month compared to December 2010. For the sixth consecutive month, steel's PPIs saw a double-digit jump, at 11.3 percent. Asphalt and concrete's PPI were up 8.4 percent and 1 percent, respectively. The lumber PPI dropped for the second straight month, down 1.1 percent from the previous year.

Each building material's PPI was up from November except for steel. It was down 0.6 percent and has been declining slightly for the better part of six months. The lumber, concrete, and asphalt PPI increased from the prior month, with concrete rising just 0.1 percent. Lumber and asphalt PPIs had slightly larger gains of 0.9 percent and 0.4 percent,

Reported monthly, complete Producer Price Index graphs are available in the PCA Competitive Materials Report.