Year Dollars 1997-01-01 1105245 2002-01-01 1292149 2003-01-01 1977130 2004-01-01 1148535 2005-01-01 2779121 2006-01-01 3152003 2007-01-01 3184260 2008-01-01 4180249 2009-01-01 1973271 2010-01-01 3180113 2011-01-01 3068362 2012-01-01 12591152 2013-01-01 4140008 2014-01-01 4069326 2015-01-01 3971551 2016-01-01 2529166