Year Dollars 1992-01-01 82065 1997-01-01 41870 2005-01-01 166759 2006-01-01 311265 2007-01-01 824458 2009-01-01 670661 2010-01-01 704853 2012-01-01 579540 2014-01-01 138000 2015-01-01 724665