Year Dollars 1992-01-01 2371378 1997-01-01 2885892 2002-01-01 5038153 2003-01-01 7343301 2004-01-01 8607583 2005-01-01 5518529 2006-01-01 3960069 2007-01-01 4441701 2008-01-01 8347589 2009-01-01 4161871 2010-01-01 4871157 2011-01-01 14884585 2012-01-01 12923635 2013-01-01 3484688 2014-01-01 5560986 2015-01-01 10709632 2016-01-01 5731589