. approximately 82% ( 82 % ) of the unfunded commitments to extend credit and liquidity asset purchase agreements expire within one year from the date of issue . since many of the commitments are expected to expire or renew without being drawn upon , the total commitment amounts do not necessarily represent future cash requirements . in the normal course of business , we provide liquidity and credit enhancements to asset-backed commercial paper programs , referred to as 2018 2018conduits