Year Dollars 1992-01-01 484452 1997-01-01 954560 2002-01-01 3848893 2003-01-01 2179372 2004-01-01 2148636 2005-01-01 551867 2007-01-01 895464 2009-01-01 200234 2010-01-01 447225 2011-01-01 823037