Year	National currency, Sum Over Component Sub-periods
1997-01-01	20800000000
1998-01-01	20200000000
1999-01-01	21915000000
2000-01-01	20107000000
2001-01-01	16725000000
2002-01-01	19842000000
2003-01-01	23855000000
2004-01-01	24698000000
2005-01-01	24863000000
2006-01-01	24098000000
2007-01-01	25803000000
2008-01-01	24679000000
2009-01-01	19480000000
2010-01-01	20328000000
2011-01-01	25012000000
2012-01-01	25484000000