The price of construction materials dropped by 0.1% in September but is up 16.3% from the same month last year. Prices for nonresidential construction materials decreased by 0.1% from August to September but rose 15.9% from a year earlier. Six of the eleven subcategories had lower prices. Prices for softwood lumber are up 14.5% annually while falling 4.6% from August to September. Prices for iron and steel are down 5.4% for the month and 12.8% over the previous year. From Aug