Year Dollars 1997-01-01 325240 2002-01-01 929712 2003-01-01 1013600 2004-01-01 1938717 2005-01-01 1102774 2006-01-01 1178732 2008-01-01 932329 2009-01-01 1253730 2010-01-01 1822323 2011-01-01 1616310 2012-01-01 1183487 2013-01-01 1494679 2014-01-01 2251333 2015-01-01 1879412 2016-01-01 1564576