New issuance of single-family MBS and non-mortgage ABS fell sharply in the fourth quarter of 2013 as mortgage refinance activity continued to decline and ABS production ended the year quietly, according to a new Inside MBS & ABS analysis. Monthly production of single-family MBS went into a steady, year-long decline at the beginning of 2013. In December, total single-family MBS issuance fell to just $77.1 billion, the lowest monthly production figure since July 2011. December marked the third straight month with MBS issuance below $100 billion, and it gave the fourth quarter an anemic $254.8 billion in total issuance – a two-and-a-half-year low. Although Freddie Mac scored a minor increase in December, the agency MBS market fell...[Includes two data charts]