Year Dollars 1992-01-01 2259535 1997-01-01 768281 2002-01-01 1083826 2003-01-01 1661563 2004-01-01 2979903 2005-01-01 2803185 2006-01-01 2640291 2007-01-01 3883117 2008-01-01 5581573 2009-01-01 6213936 2010-01-01 3650168 2011-01-01 10267058 2012-01-01 3529572 2013-01-01 8309459 2014-01-01 8486575 2015-01-01 7059872 2016-01-01 7189977