Year Dollars 1997-01-01 445754 2002-01-01 945594 2003-01-01 607465 2004-01-01 329531 2005-01-01 1635443 2006-01-01 825194 2007-01-01 1516425 2008-01-01 2181149 2010-01-01 976158 2011-01-01 1472356 2012-01-01 4270260 2013-01-01 4157690 2014-01-01 2425622 2015-01-01 625967 2016-01-01 945294