Year Dollars 1992-01-01 1084723 1997-01-01 2173800 2002-01-01 2075944 2003-01-01 2581633 2004-01-01 3104635 2005-01-01 3246760 2006-01-01 4302434 2007-01-01 3359271 2008-01-01 4020584 2009-01-01 2466291 2010-01-01 3547466 2011-01-01 3263972 2012-01-01 3745806 2013-01-01 4199547 2014-01-01 6087934 2015-01-01 5966103 2016-01-01 5387369