Year Dollars 1992-01-01 16704196 1997-01-01 8620062 2002-01-01 3557854 2003-01-01 980035 2004-01-01 6036776 2005-01-01 6095306 2006-01-01 9548309 2007-01-01 8939154 2008-01-01 21338834 2009-01-01 35737531 2012-01-01 3967187 2013-01-01 10336370