The Federal Home Loan Bank system-wide minimum collateral-to-advances coverage ratio was 129 percent at year-end 2010, a 20 percentage point decrease from year-end 2009.The FHFA’s annual Report on Federal Home Loan Collateral Securing Advances – prepared for the Senate Committee on Banking, Housing and Urban Development and the House Financial Services Committee – analyzes, among other things, the ratios of subprime and nontraditional collateral to the total collateral.