Year Dollars 1997-01-01 215196 2008-01-01 590504 2009-01-01 698360 2010-01-01 1744522 2011-01-01 1218454 2012-01-01 300878 2013-01-01 607401 2014-01-01 457974 2015-01-01 492007 2016-01-01 1399386