As of December 2006, according to government data reported by the Washington Post, the military stated that nearly 40% of the army's total equipment has been to Iraq, with an estimated yearly refurbishment cost of $US 17 billion. The military states that the yearly refurbishment cost has increased by a factor of ten compared to that of the pre-war state. As of December 2006 approximately 500 M1 tanks, 700 Bradley Fighting Vehicles and 1000 Humvees are awaiting repair in US military depots.