Year Dollars 1997-01-01 631903 2002-01-01 174156 2003-01-01 218194 2004-01-01 335645 2005-01-01 542887 2006-01-01 743688 2007-01-01 957341 2008-01-01 1875121 2009-01-01 844346 2010-01-01 1165748 2011-01-01 2456460 2012-01-01 1375774 2013-01-01 1132042 2014-01-01 499526 2015-01-01 1220674 2016-01-01 1143076