Year Dollars 1997-01-01 270180 2002-01-01 467880 2004-01-01 460242 2005-01-01 262492 2006-01-01 411614 2007-01-01 573852 2008-01-01 546655 2009-01-01 1023073 2010-01-01 293636 2011-01-01 320461 2012-01-01 540224 2013-01-01 547178 2014-01-01 880595 2015-01-01 1197662 2016-01-01 1702635