Year	National currency, Sum Over Component Sub-periods
1997-01-01	15100000000
1998-01-01	14800000000
1999-01-01	15514000000
2000-01-01	11571000000
2001-01-01	5705000000
2002-01-01	10835000000
2003-01-01	12196000000
2004-01-01	16563000000
2005-01-01	11811000000
2006-01-01	9418000000
2007-01-01	4783000000
2008-01-01	9996000000
2009-01-01	8286000000
2010-01-01	7819000000
2011-01-01	11468000000
2012-01-01	11184000000