Year Dollars 1992-01-01 689141 1997-01-01 1915042 2002-01-01 1180999 2003-01-01 1516766 2004-01-01 1729205 2005-01-01 3087162 2006-01-01 10538597 2007-01-01 3135695 2008-01-01 3681152 2009-01-01 7992726 2010-01-01 10313011 2011-01-01 15099343 2012-01-01 1376579 2013-01-01 15511238 2015-01-01 7348975 2016-01-01 11244858