Year Dollars 1992-01-01 2934159 1997-01-01 35891637 2002-01-01 12997120 2003-01-01 16568638 2004-01-01 12252439 2005-01-01 13949238 2006-01-01 15522359 2007-01-01 20348878 2008-01-01 18692612 2009-01-01 21037008 2010-01-01 14660016 2011-01-01 22617550 2012-01-01 25216173 2013-01-01 38134924 2014-01-01 24465741 2015-01-01 43621501 2016-01-01 34987842