Material price changes from April 2007 to May 2007

Percent changes from April 2007 to May 2007/ May 2006 to May 2007

Gasoline — +12.1/ +13.9

No. 2 Diesel fuel — -4.8/ -5.5

Crude petroleum — +1.9/ -11.4

Plastic construction products — +0.8/ -0.9

Hardwood lumber — +0.3/ -1.5

Plywood — +1.3/ -0.7

Steel mill products — -1.3/ +13.9

Aluminum mill shapes — +0.5/ +4.7

Copper and brass mill shapes — -0.8/ +4.2

Fabricated structural metal products — +0.4/ +4.7

Cement — +1.1/ +6.4

Concrete products — +0.1/ +4.5

Asphalt felts and coatings — -0.6/ +3.1

Gypsum products — -5.6/ -14.1

Iron ore — 0/ -4.9

Iron and steel scrap — -10.5/ +11.8

Copper base scrap — +10.3/ +9.1

Construction sand, gravel, and crushed stone — +0.5/ +9.0

Construction machinery and equipment — +0.1/ +2.2

Tire, tube, thread, etc. — +0.7/ +3.9

Light motor trucks — -0.3/ -0.4

Heavy motor trucks — 0/ +6.8

Truck trailers — -0.2/ +2.8