Year Total 1997 2128860000 1998 2033460000 1999 2099520000 2000 2099520000 2001 2099520000 2002 2099520000 2003 2099520000 2004 2099520000 2005 2099520000 2006 2099520000 2007 2099520000 2008 6606810000 2009 6606810000 2010 9148500000 2011 15731100000 2012 15731100000 2013 15731100000 2014 15731100000 2015 15731100000 2016 15731100000