Year Dollars 1997-01-01 708515 2004-01-01 79077 2006-01-01 374595 2007-01-01 729498 2008-01-01 1532771 2009-01-01 1600140 2010-01-01 1194273 2011-01-01 1736903 2012-01-01 2210521 2013-01-01 3597496 2014-01-01 1113392 2015-01-01 299731 2016-01-01 361053