Year Dollars 1992-01-01 33662247 1997-01-01 57756487 2002-01-01 46272289 2003-01-01 39965903 2004-01-01 53218995 2005-01-01 94629901 2006-01-01 84193004 2007-01-01 77881155 2008-01-01 81085592 2009-01-01 63636387 2010-01-01 71799574 2011-01-01 87963829 2012-01-01 71941357 2013-01-01 89843713 2014-01-01 115103064 2015-01-01 43744322 2016-01-01 50028416