Year Dollars 1997-01-01 516160 2002-01-01 469953 2003-01-01 253981 2004-01-01 98426 2005-01-01 344528 2006-01-01 135496 2007-01-01 231718 2008-01-01 259389 2009-01-01 203874 2010-01-01 67427 2011-01-01 443876 2012-01-01 429255 2013-01-01 634615