Year Dollars 1992-01-01 235654 1997-01-01 1580669 2005-01-01 2614087 2006-01-01 498154 2007-01-01 757263 2008-01-01 1525040 2009-01-01 2514470 2010-01-01 1703220 2011-01-01 3831105 2012-01-01 1913224 2013-01-01 1019219 2014-01-01 8307107 2015-01-01 14843164 2016-01-01 22346009