Year Dollars 1992-01-01 411089 1997-01-01 4041092 2002-01-01 7352092 2003-01-01 8692386 2004-01-01 16952356 2005-01-01 25248481 2006-01-01 16735420 2007-01-01 20266645 2008-01-01 28031995 2009-01-01 21726927 2010-01-01 37473389 2011-01-01 65840932 2012-01-01 39387630 2013-01-01 53625784 2014-01-01 54872499 2015-01-01 50394734 2016-01-01 36457921