The Fed's Balance At The End Of 2013: $4 Trillion

"End result: every month in 2013 the Fed will increase its balance sheet by $85 billion, consisting of $40 billion in MBS, and $45 billion in 10-30 year Treasurys, or the natural monthly supply of longer-dated issuance. The Fed will therefore monetize roughly half of the US budget deficit in 2013."