Year Dollars 1997-01-01 1493216 2002-01-01 158054 2003-01-01 1015223 2004-01-01 1821041 2005-01-01 218608 2006-01-01 3180775 2008-01-01 388511 2009-01-01 302382 2010-01-01 438972 2011-01-01 453722 2012-01-01 1553564 2013-01-01 1601784 2014-01-01 3327648 2015-01-01 1316087 2016-01-01 854250