Year Dollars 1992-01-01 38423367 1997-01-01 57296262 2002-01-01 40694294 2003-01-01 66105718 2004-01-01 60641324 2005-01-01 78361991 2006-01-01 92429726 2007-01-01 133014330 2008-01-01 141332205 2009-01-01 148927995 2010-01-01 155517974 2011-01-01 223828114 2012-01-01 226535184 2013-01-01 258578168 2014-01-01 175504214 2015-01-01 131003858 2016-01-01 105793989