Year Dollars 1992-01-01 16312625 1997-01-01 29788497 2002-01-01 40182705 2003-01-01 28143775 2004-01-01 48436593 2005-01-01 60735715 2006-01-01 61202787 2007-01-01 109505896 2008-01-01 142648149 2009-01-01 215481631 2010-01-01 179199565 2011-01-01 177350322 2012-01-01 196666345 2013-01-01 188950257 2014-01-01 183415053 2016-01-01 216754528