Mortgage originations defied expectations in the fourth quarter and held virtually even with the previous period, despite a measurable increase in mortgage interest rates. According to exclusive new Inside Mortgage Finance estimates, some $580.0 billion of first-lien mortgages were originated during the fourth quarter of 2016, a slight 0.9 percent drop from the third quarter. That lifted total production for the year to an estimated $2.065 trillion, up 19.0 percent from the 2015 total. Industry forecasters were...[Includes two data tables]