Year Dollars 1992-01-01 806435 1997-01-01 570853 2005-01-01 4374434 2006-01-01 8134481 2007-01-01 4624863 2008-01-01 2682232 2009-01-01 1849156 2010-01-01 819716 2011-01-01 3206928 2012-01-01 1559848 2013-01-01 737051 2015-01-01 241680 2016-01-01 557000