The Houston–The Woodlands-Sugar Land area's gross metropolitan product (GMP) in 2005 was $308.7 billion, up 5.4% from 2004 in constant dollars—slightly larger than Austria's gross domestic product. By 2012, the GMP had risen to $449 billion, the fourth-largest of any metropolitan area in the United States. Only 26 countries other than the United States had a GDP exceeding Greater Houston's GAP. Mining, which in the area is almost entirely oil and gas exploration and production, accounted for 11% of Greater Houston's GAP—down from 21% as recently as 1985. The reduced role of oil and gas in Houston's GAP reflects the rapid growth of other sectors—such as engineering services, health services, retail, and manufacturing.