Year Dollars 1997-01-01 242707 2002-01-01 23744 2003-01-01 75771 2004-01-01 145763 2006-01-01 194873 2007-01-01 91028 2008-01-01 170748 2009-01-01 408562 2010-01-01 1916217 2011-01-01 741075 2012-01-01 426066 2013-01-01 904977 2015-01-01 531876 2016-01-01 1325021