The Federal Home Loan Banks reported a modest decline in outstanding advances during the third quarter, but the complexion of the system’s customers continued to shift, according to a new Inside The GSEs analysis of bank call reports and Office of Finance disclosures. Total advances outstanding declined just 0.2 percent from the end of the second quarter, but commercial bank usage was down 8.2 percent. Banks were still the biggest borrowers of FHLBank advances, with a 58.9 percent share of the total $586.2 billion (par value) of advances outstanding at the end of September. Meanwhile, advances to insurance companies surged a whopping 14.6 percent during the third quarter, replacing thrifts as the second-largest class of FHLBank advance users.