U.S. production of construction aggregates in 2012 was 2.18 billion short tons valued at $17.6 billion, free on board (f.o.b.) at plant. In 2012, construction aggregates production remained virtually unchanged from the levels of the last two years because of a very slight increase compared with that of 2011 in the production of both construction sand and gravel and crushed stone. The average unit value, which is the f.o.b. at the plant price of a metric ton of material, increased slightly. Construction aggregates production was 36 percent less than and the associated value was 23 percent less than the record highs reported in 2006.