By Deegant Pandya, Tamara Hoffman and Andy White Standard & Poor’s Ratings Services forecasts a 50 to 100 basis point decline in the U.S. commercial mortgage-backed securities delinquency rate this year, based on historical and distressed loan data, vintage characteristics, maturity schedules and regression testing against the national unemployment rate. Given the 6.69 percent Standard & Poor’s delinquency rate in December 2014 (down 123 basis points year over year), we expect CMBS delinquency to be in the 5.6 to 6.1 percent range by the end of 2015. We derived a forward-looking delinquency rate from time series analysis calculations and the…