Year National currency, Sum Over Component Sub-periods 1996-01-01 1075000000 1997-01-01 1258000000 1998-01-01 1698000000 1999-01-01 1811000000 2000-01-01 2207000000 2001-01-01 2899000000 2002-01-01 3387000000 2003-01-01 3637000000 2004-01-01 4051000000 2005-01-01 3912000000 2006-01-01 5019000000 2007-01-01 6533000000 2008-01-01 6602000000 2009-01-01 5985000000 2010-01-01 6668000000 2011-01-01 7698000000 2012-01-01 8687000000 2013-01-01 9925000000