Banks and thrifts continued to push a high volume of home mortgages into the secondary market during the first three months of 2013, but the pace was slowing, according to a new Inside Mortgage Trends analysis of call report data. The industry reported $395.8 billion in single-family mortgage sales during the first quarter, down 5.1 percent from the previous period. It was a stronger sales volume than during the first quarter of 2012, however, and ranked as the fourth largest ... [Includes one data chart]