Since Second Pass budget approval of $957m, price indexation and foreign exchange variations have accounted for $884m of total budget variation. Significant real variations include: a June 2006 Government approved acquisition of a further 34 MRH90 helicopters to replace the Black Hawk (Phase 4) and Sea King (Phase 6) fleets resulting in a scope change of $2,566m; and a transfer of $219m in October 2006 to DSG for facilities.