Year Dollars 1992-01-01 31146481 1997-01-01 42344593 2002-01-01 10609251 2003-01-01 10334460 2004-01-01 6731145 2005-01-01 11382420 2006-01-01 19654459 2007-01-01 24625126 2008-01-01 17750245 2009-01-01 38300803 2010-01-01 28803968 2011-01-01 22123007 2012-01-01 17257017 2013-01-01 38659127 2014-01-01 20072531 2015-01-01 18928461 2016-01-01 20276145