Year National Currency 2004-01-01 6510300000 2005-01-01 6166600000 2006-01-01 7067200000 2007-01-01 8191300000 2008-01-01 10544900000 2009-01-01 11812700000 2010-01-01 13044900000 2011-01-01 12787000000 2012-01-01 15782000000