Year	National currency, Sum Over Component Sub-periods
1997-01-01	744400000000
1998-01-01	773600000000
1999-01-01	802259000000
2000-01-01	975139000000
2001-01-01	1028979000000
2002-01-01	1057297000000
2003-01-01	1036456000000
2004-01-01	1132365000000
2005-01-01	1225660000000
2006-01-01	1396886000000
2007-01-01	1519266000000
2008-01-01	1588542000000
2009-01-01	1302619000000
2010-01-01	1566821000000
2011-01-01	1775459000000
2012-01-01	1912212000000