Year Dollars 2002-01-01 184331 2004-01-01 591191 2005-01-01 1365250 2006-01-01 623991 2007-01-01 1220601 2008-01-01 734737 2009-01-01 363779 2010-01-01 810349 2013-01-01 199933 2014-01-01 679968 2015-01-01 391317 2016-01-01 257874