Year Dollars 1997-01-01 899847 2002-01-01 5600666 2003-01-01 5877877 2004-01-01 7927095 2005-01-01 8867185 2006-01-01 9546358 2007-01-01 11032765 2008-01-01 17149411 2009-01-01 17558838 2010-01-01 18201232 2011-01-01 31352867 2012-01-01 18188500 2013-01-01 26007634 2014-01-01 90195157 2015-01-01 40922580 2016-01-01 40507202