Year Dollars 1992-01-01 1385965 1997-01-01 5325261 2002-01-01 3306468 2003-01-01 8304799 2004-01-01 7949664 2005-01-01 13423793 2006-01-01 27327042 2007-01-01 9823776 2008-01-01 57295871 2010-01-01 51331446 2011-01-01 60899597 2012-01-01 62937814 2013-01-01 61296568 2014-01-01 66585956 2015-01-01 42811858 2016-01-01 37161999