Mortgage production volume remained fairly steady in the second quarter as a growing purchase-mortgage market helped offset a weakening in refinance lending, according to a new ranking and analysis by Inside Mortgage Finance. Mortgage lenders originated an estimated $495.0 billion of home loans during the second quarter of 2013, down just 1.0 percent from the first three months of the year. That pushed year-to-date production volume to just shy of $1 trillion, and put the market 14.4 percent ahead of the pace set during the first six months of 2012. It figures...[Includes two data charts]