6 10.4 10.7 10.8 10.0 United States 7.8 8.9 9.7 10.1 12.3 10.6 8.1 Unweighted average OECD 6.9 9.3 10.1 10.3 9.3 9.0 8.4 Source; OECD Centre for Tax Policy Administration (online data on Tax Policy Statistics). Note: 1 From 1991 the figures relate to the united Germany. EFTA00317196 INTERNATIONAL TAX COOPERATION AN