Year National Currency 2004-01-01 1682178200 2005-01-01 2305645300 2006-01-01 3129781700 2007-01-01 4591311900 2008-01-01 6412103900 2009-01-01 6931624300 2010-01-01 6782629500 2011-01-01 7022000000 2012-01-01 6972000000 2013-01-01 7451089400 2014-01-01 7544000000 2015-01-01 7629000000 2016-01-01 8101000000 2017-01-01 8796000000