Year Dollars 1992-01-01 17491981 1997-01-01 66497749 2002-01-01 57250108 2003-01-01 63596088 2004-01-01 89173682 2005-01-01 151243874 2006-01-01 227356160 2007-01-01 361676331 2008-01-01 452008268 2009-01-01 261364063 2010-01-01 284180712 2011-01-01 259947727 2012-01-01 318105014 2013-01-01 285756379 2014-01-01 317764234