Year Dollars 1992-01-01 255746 1997-01-01 540042 2002-01-01 111912 2003-01-01 88018 2004-01-01 1015786 2006-01-01 203625 2008-01-01 420695 2009-01-01 118631 2010-01-01 451690 2011-01-01 394005 2012-01-01 1951052 2015-01-01 245195 2016-01-01 557943