Year Dollars 1992-01-01 1075531 1997-01-01 2391699 2002-01-01 427975 2004-01-01 2718082 2005-01-01 2210689 2006-01-01 2794877 2009-01-01 2786734 2010-01-01 2425743 2011-01-01 3557872 2012-01-01 2321112 2013-01-01 2625005 2015-01-01 3503481 2016-01-01 3552784