Year Dollars 1997-01-01 2021642 2002-01-01 173884 2003-01-01 1379203 2004-01-01 278085 2005-01-01 370997 2006-01-01 1084215 2008-01-01 590963 2009-01-01 875766 2010-01-01 1930812 2011-01-01 1327694 2012-01-01 1159716 2013-01-01 621117 2014-01-01 4392043 2015-01-01 1763145