Material price changes from December 2006 to January 2007

Percent changes from December 2006 to January 2007/ January 2006 to January 2007

Gasoline β€” -6.3/ -9.7

No. 2 Diesel fuel β€” -10.9/ -8.2

Crude petroleum β€” -9.2/ -14.3

Plastic construction products β€” -1.2/ -3.4

Hardwood lumber β€” +0.4/ -1.0

Plywood β€” +0.9/ -7.6

Steel mill products β€” -0.2/ +9.3

Aluminum mill shapes β€” +1.9/ +11.2

Copper and brass mill shapes β€” -4.5/ +34.9

Fabricated structural metal products β€” +0.2/ +4.9

Cement β€” +2.5/ +6.9

Concrete products β€” +1.2/ +5.2

Asphalt felts and coatings β€” +3.0/ +4.4

Gypsum products β€” -0.1/ +3.2

Iron ore β€” -0.2/ +1.4

Iron and steel scrap β€” +7.3/ +17.5

Copper base scrap β€” -6.9/ +29.9

Construction sand, gravel, and crushed stone β€” +2.3/ +8.3

Construction machinery and equipment β€” +0.7/ +2.7

Tire, tube, thread, etc. β€” -0.3/ +5.6

Light motor trucks β€” -1.5/ +0.3

Heavy motor trucks β€” +1.1/ +4.8

Truck trailers β€” 0/ +4.8