Year Dollars 1992-01-01 135334853 1997-01-01 229507143 2002-01-01 216709446 2003-01-01 198577527 2004-01-01 213528363 2005-01-01 287675724 2006-01-01 319512947 2007-01-01 333968669 2008-01-01 332835721 2009-01-01 307010947 2010-01-01 326752953 2011-01-01 397666051 2012-01-01 339805268 2013-01-01 360169435 2014-01-01 326825142 2015-01-01 326772710 2016-01-01 405363049