Mortgage industry economists widely agree that loan origination volume is going to drop sharply in 2013 – and again next year – although there is some variation in when they expect the downturn to take hold. The consensus view of economists at Fannie Mae, Freddie Mac and the Mortgage Bankers Association is that new originations in 2013 will drop 13.6 percent from last year’s level, falling to $1.635 trillion. The consensus – a simple average calculated by Inside Mortgage Trends – predicts ... [Includes one data chart]