Year Dollars 1992-01-01 287660 1997-01-01 1767266 2002-01-01 365436 2003-01-01 172334 2004-01-01 458583 2005-01-01 603841 2006-01-01 137949 2007-01-01 46278 2008-01-01 163361 2009-01-01 287546 2012-01-01 1968242 2013-01-01 564542 2014-01-01 534530 2015-01-01 267135 2016-01-01 87682