Year Dollars 1992-01-01 724292 1997-01-01 2068367 2002-01-01 1030606 2004-01-01 1140737 2006-01-01 1049803 2007-01-01 1845148 2008-01-01 3309247 2009-01-01 1540197 2010-01-01 733856 2011-01-01 192369