A spinoff product of the Federal Home Loan Banks’ Mortgage Partnership Finance Program experienced explosive growth in lender participation resulting in a record 2012, according to the FHLBank of Chicago. The MPF Xtra program, launched in 2008 to serve as a conduit for Fannie Mae loans, saw its volume increase from $2.8 billion overall during 2011 to $6.9 billion at year-end 2012, noted the Chicago FHLBank in its fourth quarter 2012 earnings report.