Year Dollars 1997-01-01 2378306 2002-01-01 71512 2003-01-01 271231 2004-01-01 51004 2006-01-01 477084 2007-01-01 1271606 2008-01-01 328508 2011-01-01 767293 2012-01-01 742217 2014-01-01 669966 2015-01-01 109160 2016-01-01 722015