Year Dollars 1997-01-01 254681 2002-01-01 572146 2003-01-01 416230 2004-01-01 618344 2005-01-01 1333643 2007-01-01 10550414 2008-01-01 10668122 2009-01-01 2692816 2010-01-01 12887422 2011-01-01 15178700 2012-01-01 13521406 2013-01-01 27175187 2014-01-01 27532875 2015-01-01 5749849 2016-01-01 3596049