Combined net income for the 12 Federal Home Loan Banks was up 25 percent for 2005, totaling $2.4 billion, compared to $1.9 billion for all of 2004, the Federal Home Loan Bank Office of Finance anounced recently. The net income increase was attributed to higher interest income on advances and investments as a result of both increased volume and higher yields. “Interest income on mortgage loans held for portfolio increased because of higher yields…