Year National Currency 2004-01-01 1249732200 2005-01-01 1829665200 2006-01-01 2238411900 2007-01-01 2889403700 2008-01-01 3423586600 2009-01-01 3889930800 2010-01-01 4383572900 2011-01-01 4772000000 2012-01-01 5483000000 2013-01-01 5868974600 2014-01-01 6150000000 2015-01-01 6610000000 2016-01-01 6344000000 2017-01-01 6929000000