Year	National currency, Sum Over Component Sub-periods
1997-01-01	205700000000
1998-01-01	228100000000
1999-01-01	248357000000
2000-01-01	326191000000
2001-01-01	313463000000
2002-01-01	297408000000
2003-01-01	294929000000
2004-01-01	307623000000
2005-01-01	385465000000
2006-01-01	483541000000
2007-01-01	598950000000
2008-01-01	590833000000
2009-01-01	425325000000
2010-01-01	457607000000
2011-01-01	485406000000
2012-01-01	477824000000