Year Dollars 1992-01-01 30864869 1997-01-01 73365603 2002-01-01 64549037 2003-01-01 63914293 2004-01-01 70317952 2005-01-01 83524333 2006-01-01 84450081 2007-01-01 134286282 2008-01-01 181850026 2009-01-01 155412494 2010-01-01 206327525 2011-01-01 249230128 2012-01-01 287391904 2013-01-01 280921182 2014-01-01 290191812 2015-01-01 273037719 2016-01-01 245026155