Year Dollars 1992-01-01 319961 1997-01-01 336284 2002-01-01 2839192 2003-01-01 3586622 2004-01-01 4000799 2005-01-01 1716347 2006-01-01 2169637 2007-01-01 4477944 2008-01-01 3112847 2009-01-01 2959323 2010-01-01 2635281 2011-01-01 2599625 2012-01-01 4240123 2013-01-01 4308072 2014-01-01 3407816 2015-01-01 4691837 2016-01-01 6624643