Material price changes from November to December 2006

Percent changes from November to December 2006/ December 2005 to December 2006

Gasoline — +1.4/ +1.8

No. 2 Diesel fuel — +2.9/ +2.3

Crude petroleum — +5.0/ -0.1

Plastic construction products — -0.3/ -0.6

Hardwood lumber — -0.9/ -1.9

Plywood — +1.2/ -7.6

Steel mill products — -0.4/ +11.6

Aluminum mill shapes — +0.1/ +12.4

Copper and brass mill shapes — -1.6/ +44.3

Fabricated structural metal products — +0.1/ +5.3

Cement — 0/ +10.4

Concrete products — 0/ +7.9

Asphalt felts and coatings — -0.5/ +3.0

Gypsum products — -1.9/ +5.4

Iron ore — -5.8/ +7.5

Iron and steel scrap — +3.3/ +2.8

Copper base scrap — -1.2/ +47.3

Construction sand, gravel, and crushed stone — -0.3/ +9.3

Construction machinery and equipment — 0/ +3.4

Tire, tube, thread, etc. — +0.1/ +5.4

Light motor trucks — -0.5/ +2.2

Heavy motor trucks — +0.3/ +3.6

Truck trailers — -0.2/ +4.8