Year Dollars 1992-01-01 987642 2002-01-01 960975 2003-01-01 4512734 2004-01-01 9520636 2005-01-01 5162704 2006-01-01 4187408 2007-01-01 6033518 2008-01-01 7112779 2009-01-01 5367011 2010-01-01 8650549 2011-01-01 11147892 2012-01-01 13230509 2013-01-01 8642864 2014-01-01 9140004 2015-01-01 13927258 2016-01-01 15826909