Year National Currency 2004-01-01 662000000 2005-01-01 721000000 2006-01-01 832000000 2007-01-01 1019000000 2008-01-01 1252000000 2009-01-01 1496000000 2010-01-01 1792000000 2011-01-01 2318000000 2012-01-01 3880000000