Year Dollars 1992-01-01 116135436 1997-01-01 202811830 2002-01-01 213450676 2003-01-01 216124578 2004-01-01 289765706 2005-01-01 316698343 2006-01-01 358577275 2007-01-01 278118706 2008-01-01 335429156 2009-01-01 272787329 2010-01-01 314387165 2011-01-01 365644477 2012-01-01 353700698 2013-01-01 283444880 2014-01-01 285687700 2015-01-01 327308197 2016-01-01 474442192