Year National Currency 2004-01-01 2263000000 2005-01-01 4078000000 2006-01-01 5376000000 2007-01-01 5866000000 2008-01-01 6359000000 2009-01-01 7509000000 2010-01-01 8787000000 2011-01-01 11209000000 2012-01-01 13969000000