Year Dollars 1997-01-01 1530872 2002-01-01 1597961 2003-01-01 3295379 2004-01-01 3156300 2005-01-01 4331166 2006-01-01 3701676 2007-01-01 4536560 2009-01-01 3127863 2010-01-01 6870821 2011-01-01 5068767 2012-01-01 1377790 2013-01-01 1994709 2014-01-01 5136332 2015-01-01 5023568 2016-01-01 5437315