Year National Currency 2004-01-01 15067467500 2005-01-01 15938326500 2006-01-01 16729265500 2007-01-01 21081570700 2008-01-01 22995033000 2009-01-01 22765251000 2010-01-01 24138068600 2011-01-01 25341397500 2012-01-01 26662782300 2013-01-01 28513519600 2014-01-01 30193000000 2015-01-01 32202000000 2016-01-01 34079000000 2017-01-01 36046000000