Year Dollars 1997-01-01 1256019 2002-01-01 1036475 2003-01-01 531385 2005-01-01 3243164 2006-01-01 4490433 2008-01-01 1514608 2010-01-01 1039501 2011-01-01 662198 2012-01-01 873677 2013-01-01 793849 2014-01-01 1059272 2015-01-01 716503 2016-01-01 684178