Senator CORMANN (Western Australia) (14:01): My question is to the minister representing the Treasurer, Senator Wong. Why does a government which is promising surpluses for each single year over the forward estimates have to pay $1.2 billion more in net interest payments to service its debts in 2015-16 than it does in 2012-13? Is the government expected government borrowings to go up over that period or interest rates or both?