Year Dollars 1997-01-01 321722 2002-01-01 1425816 2003-01-01 451041 2004-01-01 1166272 2005-01-01 1183470 2006-01-01 3013361 2007-01-01 1132485 2008-01-01 1114146 2009-01-01 1657530 2010-01-01 1615678 2011-01-01 3252327 2012-01-01 2807691 2013-01-01 2079041 2014-01-01 2418514 2015-01-01 2876429 2016-01-01 2521166