Year Dollars 1997-01-01 1716137 2002-01-01 144134 2003-01-01 200970 2004-01-01 31568 2005-01-01 126704 2006-01-01 34701 2007-01-01 412941 2008-01-01 456878 2010-01-01 70316 2011-01-01 605672 2013-01-01 2111818 2014-01-01 494694 2015-01-01 929850