Year Dollars 1997-01-01 235450 2002-01-01 259227 2003-01-01 794711 2005-01-01 2471316 2006-01-01 285895 2007-01-01 793612 2008-01-01 1946394 2009-01-01 4498680 2010-01-01 1387120 2011-01-01 139559 2012-01-01 169445 2013-01-01 570332 2014-01-01 396269 2015-01-01 376798