Year Dollars 1992-01-01 881901 1997-01-01 2270507 2002-01-01 4763467 2003-01-01 5135717 2004-01-01 4667207 2005-01-01 6498692 2006-01-01 6271175 2007-01-01 8341480 2008-01-01 8612896 2009-01-01 8724385 2010-01-01 8886254 2011-01-01 8114487 2012-01-01 7350960 2013-01-01 8777463 2014-01-01 7673493 2015-01-01 9139990 2016-01-01 8623312