The mortgage servicing business continued to shrink in early 2010 as the outstanding balance of single-family home loans fell for the ninth consecutive quarter. The Federal Reserve reported late last week that there were $10.749 trillion of home mortgages outstanding as of the end of March, a 1.0 percent drop from the previous quarter. With declining house prices, a sharp drop in cash-out refinance and home-equity lending and feeble home sales, the supply of home mortgage debt has fallen persistently since... [Includes one data chart]