Year Dollars 1997-01-01 21746 2002-01-01 48801 2003-01-01 71480 2004-01-01 268472 2005-01-01 130673 2006-01-01 212750 2007-01-01 357946 2008-01-01 276934 2009-01-01 653878 2010-01-01 2529176 2011-01-01 798595 2012-01-01 638861 2013-01-01 438044 2014-01-01 1193460 2015-01-01 993484 2016-01-01 1343291