Year Dollars 1997-01-01 2375766 2002-01-01 3419019 2003-01-01 173386 2004-01-01 196885 2006-01-01 159132 2008-01-01 333750 2009-01-01 250335 2010-01-01 504715 2012-01-01 1006714 2013-01-01 1028656 2014-01-01 5093440 2016-01-01 363931