Year Dollars 1992-01-01 21281814 1997-01-01 36922253 2002-01-01 49544938 2003-01-01 50972491 2004-01-01 59919172 2005-01-01 73024202 2006-01-01 100495026 2007-01-01 116380061 2008-01-01 120876445 2009-01-01 122542153 2010-01-01 152114179 2011-01-01 158420376 2012-01-01 173954336 2013-01-01 153456548 2014-01-01 168343139 2015-01-01 200797816 2016-01-01 189974329