The refinance program for performing, underwater Fannie Mae and Freddie Mac mortgages staggered to a five-year low during 2014, but government officials are thinking about keeping it on life support for another year. The Home Affordable Refinance Program is slated to expire at the end of 2015. Although the Federal Housing Finance Agency has barnstormed around the country trying to drum up business, activity in the program has fallen steadily since ... [Includes two data charts]