Year Dollars 1992-01-01 1314465 1997-01-01 2303274 2002-01-01 2610975 2003-01-01 2950896 2004-01-01 2884957 2005-01-01 2606589 2006-01-01 4264447 2007-01-01 5534562 2008-01-01 5139418 2009-01-01 4604755 2010-01-01 3760629 2011-01-01 6377054 2012-01-01 5875575 2013-01-01 7650817 2014-01-01 4936227 2015-01-01 8910596 2016-01-01 5488892