A strong tide of refinance activity lifted mortgage origination volume in 2015, according to a new Inside Mortgage Trends analysis of Home Mortgage Disclosure Act data released late this week by federal regulators. Aggregate national data released by the Federal Financial Institutions Examination Council show a total of $1.651 trillion in first-lien mortgage originations for home purchase and refinance. That was up 32.9 percent from 2014 but failed to ... [Includes one data chart]