Year Dollars 1992-01-01 228896 1997-01-01 152698 2002-01-01 378357 2003-01-01 143632 2004-01-01 667363 2005-01-01 145348 2007-01-01 490662 2008-01-01 309439 2009-01-01 435901 2010-01-01 339735 2011-01-01 81109