Year Dollars 1992-01-01 1097394 1997-01-01 1276830 2002-01-01 1675507 2003-01-01 1873536 2004-01-01 2435860 2005-01-01 3254142 2006-01-01 3046428 2007-01-01 4271287 2008-01-01 5706124 2009-01-01 6349290 2010-01-01 3776898 2011-01-01 5067955 2012-01-01 4886322 2013-01-01 4878687 2014-01-01 3488188 2015-01-01 4022314 2016-01-01 3831998