Year Dollars 1997-01-01 26220 2002-01-01 106380 2003-01-01 66322 2004-01-01 206896 2005-01-01 491647 2006-01-01 245401 2007-01-01 300087 2008-01-01 598473 2009-01-01 459385 2010-01-01 814631 2011-01-01 967071 2012-01-01 1323145 2013-01-01 545730 2014-01-01 338580 2015-01-01 1372669 2016-01-01 502576