Year Dollars 1992-01-01 3475557 1997-01-01 10445926 2002-01-01 23412062 2003-01-01 17638705 2004-01-01 24641467 2005-01-01 21596852 2006-01-01 25517878 2007-01-01 29834920 2008-01-01 28151304 2009-01-01 22902272 2010-01-01 32220324 2011-01-01 43893115 2012-01-01 60570478 2013-01-01 54847541 2014-01-01 46079038 2015-01-01 43358475 2016-01-01 38453158