The Congressional Budget Office said the budget deficit was about $\$ 1.1$ trillion in fiscal year 2012 That is about $\$ 200$ billion smaller than in 2011 but still ranks as the fourth-largest deficit since World War II. Source: The Congressional Budget Office, October 5,2012
Of the components of government outlays and receipts, which have changed most to contribute to the huge budget deficits in 2011 and 2012 ?