Year Dollars 1992-01-01 421989 1997-01-01 1277161 2002-01-01 2048794 2003-01-01 2137326 2005-01-01 2454829 2006-01-01 4833052 2007-01-01 2826219 2008-01-01 3024582 2009-01-01 3682162 2010-01-01 4700359 2011-01-01 7407271 2012-01-01 6945627 2013-01-01 4093025 2014-01-01 7677510 2015-01-01 4272181 2016-01-01 3643007