Year Dollars 1997-01-01 478273 2002-01-01 177395 2003-01-01 1355189 2004-01-01 2334571 2005-01-01 1493556 2006-01-01 1067125 2007-01-01 914332 2009-01-01 2065720 2010-01-01 1395990 2011-01-01 1710216 2012-01-01 1473017 2013-01-01 1117174 2014-01-01 860150 2015-01-01 712285 2016-01-01 784294