Year Dollars 1997-01-01 53268 2002-01-01 2126062 2005-01-01 5402570 2006-01-01 11062500 2007-01-01 2141101 2008-01-01 8603403 2009-01-01 2759675 2012-01-01 2473099 2014-01-01 2623213 2015-01-01 1774043 2016-01-01 633777