Year Dollars 1997-01-01 429943 2002-01-01 520833 2003-01-01 454997 2004-01-01 951852 2005-01-01 978347 2006-01-01 1025882 2007-01-01 1671156 2008-01-01 1996387 2009-01-01 1664258 2010-01-01 2296327 2011-01-01 7274206 2012-01-01 3012035 2013-01-01 3405822 2014-01-01 1811691 2015-01-01 1532514 2016-01-01 742317