Higher-priced mortgages accounted for a scant 1.0 percent of loan sales in 2012, according to an Inside Nonconforming Markets analysis of data from the Home Mortgage Disclosure Act. Originations of higher-priced mortgages increased slightly compared with 2011 but the growth didn’t keep up with the increase in overall originations. Higher-priced first liens have an annual percentage rate at least 1.5 percentage points above the average prime offer rate. Federal regulators use the metric as a proxy for subprime mortgages. Some $15.80 billion in higher-priced mortgages were sold...[Includes one data chart]