Year Dollars 1997-01-01 282037 2002-01-01 1003779 2003-01-01 1518115 2005-01-01 512954 2007-01-01 5329433 2008-01-01 6986837 2010-01-01 1930663 2011-01-01 798412 2012-01-01 6166626 2014-01-01 7091369 2015-01-01 6909664 2016-01-01 3015255