The American Assembly, a research center at Columbia University, released a study finding that users of peer-to-peer (P2P) sharing networks purchase 30 percent more music in total dollar amount than people who didn't participate in unauthorized file sharing. While non-P2P users had libraries containing more legitimately-purchased files, they only had an average library of 1300 songs, compared to an average P2P user's library of 2,000. The discrepancy was especially staggering in Germany, where P2P users' libraries were found to be nearly 625 percent larger than their non-P2P using peers.