Year Dollars 1997-01-01 452364 2002-01-01 533784 2003-01-01 512851 2004-01-01 375231 2005-01-01 1721005 2006-01-01 3104709 2007-01-01 6127652 2008-01-01 7519202 2009-01-01 1260205 2010-01-01 1242470 2011-01-01 1999130 2012-01-01 1227119 2013-01-01 1680519 2014-01-01 1537679 2015-01-01 1034428 2016-01-01 3581082