Year Dollars 1997-01-01 57666 2005-01-01 97077 2006-01-01 464322 2007-01-01 1101909 2008-01-01 167528 2009-01-01 2280532 2010-01-01 621698 2011-01-01 78352 2012-01-01 130870 2013-01-01 55992 2014-01-01 524958 2016-01-01 733173