Mortgage delinquency rates declined during the first quarter of 2013, according to an index compiled by Inside Mortgage Finance based on 19 lenders that service a total of $6.04 trillion in home mortgages. The overall delinquency rate index fell from 9.47 percent at the end of 2012 to 8.70 percent at the end of the first quarter. That was the lowest level since the third quarter of 2008. There were...[Includes one data chart]