Year Dollars 1992-01-01 49611868 1997-01-01 44466806 2002-01-01 50515974 2003-01-01 36972574 2004-01-01 43045781 2005-01-01 48740104 2006-01-01 60568635 2007-01-01 82208296 2008-01-01 118558583 2009-01-01 95611725 2010-01-01 61727150 2011-01-01 56186692 2012-01-01 75563921 2013-01-01 58740367 2014-01-01 72401935 2015-01-01 51448341 2016-01-01 61789365