Year Dollars 1992-01-01 3790089 1997-01-01 9709591 2002-01-01 9603506 2003-01-01 9324473 2004-01-01 7651211 2005-01-01 16762379 2006-01-01 3791976 2007-01-01 20490960 2008-01-01 26778558 2009-01-01 12045917 2010-01-01 31903201 2011-01-01 5514517