Year Dollars 1997-01-01 1784238 2002-01-01 4568030 2003-01-01 1921487 2004-01-01 7289210 2005-01-01 2400094 2006-01-01 2775807 2007-01-01 2390877 2008-01-01 3280036 2009-01-01 4024970 2010-01-01 2318512 2011-01-01 3740250 2012-01-01 4176240 2013-01-01 4417954 2014-01-01 3632689 2015-01-01 3221600 2016-01-01 5126406