Year	National currency, Sum Over Component Sub-periods
1997-01-01	5900000000
1998-01-01	5300000000
1999-01-01	6400000000
2000-01-01	8532000000
2001-01-01	11021000000
2002-01-01	9004000000
2003-01-01	11656000000
2004-01-01	8136000000
2005-01-01	13051000000
2006-01-01	14682000000
2007-01-01	21021000000
2008-01-01	14683000000
2009-01-01	11197000000
2010-01-01	12509000000
2011-01-01	13543000000
2012-01-01	14300000000