Robust demand from investors chasing yield turned 2013 into a nearly unsurpassed year for high-yield "PIK" note issuance, with a record number of issues sold in the U.S. market, and overall dollar volume lagging only boom year records set in 2007 and 2008. The types and terms of PIK notes issued since the end of the financial crisis have evolved from those issued during the leveraged financing boom that preceded it. However, more remains the same than has changed. As in the past, factors such as the issuer's position in the corporate structure and the business purpose of the note offering remain key drivers of the basic interest payment terms.