NEW YORK--(BUSINESS WIRE)--Amid ongoing challenges, financial metrics are still improving for U.S. state housing finance agencies (SHFAs), according to Fitch Ratings in a new report. Throughout fiscal (FY) 2014, low conventional mortgage rates continued to suppress SHFAs' ability to originate new whole loan mortgages through SHFA-issued debt. FY 2014 results showed that aggregate assets fell by 4.5% and aggregate debt decreased by 6.9%. 'Declines in balance sheet numbers are expected to continu