Year	National currency, Sum Over Component Sub-periods
1997-01-01	217400000000
1998-01-01	235600000000
1999-01-01	249011000000
2000-01-01	291160000000
2001-01-01	316024000000
2002-01-01	329492000000
2003-01-01	329800000000
2004-01-01	365112000000
2005-01-01	406156000000
2006-01-01	441998000000
2007-01-01	495156000000
2008-01-01	514726000000
2009-01-01	499878000000
2010-01-01	541708000000
2011-01-01	576638000000
2012-01-01	615127000000