Year Dollars 1992-01-01 53646 1997-01-01 146134 2002-01-01 172244 2004-01-01 535502 2005-01-01 380114 2006-01-01 1405156 2007-01-01 616341 2008-01-01 607582 2009-01-01 355379 2010-01-01 586270 2011-01-01 776539 2012-01-01 1106200 2013-01-01 2165085 2014-01-01 1806493 2015-01-01 2235768 2016-01-01 1682452