Year Dollars 1997-01-01 20122 2002-01-01 46990 2003-01-01 255738 2004-01-01 370714 2005-01-01 876443 2006-01-01 1992386 2007-01-01 484577 2008-01-01 336662 2009-01-01 339182 2010-01-01 919435 2011-01-01 321948 2012-01-01 277637 2013-01-01 346998 2014-01-01 1302309 2015-01-01 824307 2016-01-01 540533