Year	National currency, Sum Over Component Sub-periods
1997-01-01	189000000000
1998-01-01	197800000000
1999-01-01	212899000000
2000-01-01	280404000000
2001-01-01	273321000000
2002-01-01	253683000000
2003-01-01	250268000000
2004-01-01	300896000000
2005-01-01	387742000000
2006-01-01	500022000000
2007-01-01	604288000000
2008-01-01	525379000000
2009-01-01	434282000000
2010-01-01	497975000000
2011-01-01	528370000000
2012-01-01	505978000000