Year	National Currency
2004-01-01	15265407500
2005-01-01	21729743600
2006-01-01	27354355700
2007-01-01	28874694200
2008-01-01	57887424400
2009-01-01	61898120200
2010-01-01	48292829700
2011-01-01	35826899800
2012-01-01	27599088800
2013-01-01	22538360300
2014-01-01	21830804100
2015-01-01	19578000000
2016-01-01	18381000000
2017-01-01	15668000000