Year Dollars 1992-01-01 1154951 1997-01-01 1699207 2002-01-01 3723668 2003-01-01 711202 2004-01-01 7119039 2005-01-01 1603992 2007-01-01 12026047 2008-01-01 16720541 2009-01-01 1388325 2011-01-01 12552000 2012-01-01 30256530 2013-01-01 12487676 2014-01-01 37569523 2015-01-01 38117047 2016-01-01 13539807