Year Dollars 1997-01-01 30606 2004-01-01 142092 2005-01-01 100349 2007-01-01 19486 2008-01-01 298947 2010-01-01 222891 2011-01-01 596564 2012-01-01 657233 2013-01-01 777031 2014-01-01 719560 2015-01-01 468735 2016-01-01 520486