Year Dollars 1997-01-01 966624 2002-01-01 214261 2003-01-01 373851 2004-01-01 198724 2005-01-01 161576 2006-01-01 565260 2007-01-01 874530 2008-01-01 2050055 2009-01-01 2538638 2010-01-01 1277800 2011-01-01 1899422 2012-01-01 2031657 2013-01-01 1689327 2014-01-01 4544392 2015-01-01 2951815 2016-01-01 3112466