Year Dollars 1997-01-01 159965 2002-01-01 506125 2004-01-01 350252 2006-01-01 414252 2007-01-01 300469 2008-01-01 242147 2009-01-01 183914 2010-01-01 171094 2011-01-01 323976 2012-01-01 237166 2013-01-01 398299 2016-01-01 229799