Year Dollars 1997-01-01 167652 2002-01-01 64289 2003-01-01 187412 2004-01-01 354112 2005-01-01 389331 2006-01-01 1535532 2008-01-01 2085736 2009-01-01 1186804 2010-01-01 1598154 2011-01-01 1819253 2012-01-01 4772574 2013-01-01 3662851 2014-01-01 9510317 2015-01-01 3569235 2016-01-01 9198059