Year Dollars 1997-01-01 824615 2003-01-01 728722 2005-01-01 101030 2006-01-01 75933 2007-01-01 72875 2008-01-01 332545 2009-01-01 38015 2011-01-01 299253 2012-01-01 1593242 2013-01-01 4063090 2014-01-01 6363054 2015-01-01 9108154 2016-01-01 14554553