Year Dollars 1992-01-01 9021053 1997-01-01 15617091 2002-01-01 28491884 2003-01-01 31394690 2004-01-01 36744692 2005-01-01 37238069 2006-01-01 34169799 2007-01-01 64650655 2008-01-01 47740532 2009-01-01 37545012 2010-01-01 50250902 2011-01-01 77913715 2012-01-01 69041941 2013-01-01 68834430 2014-01-01 73730908 2015-01-01 80349579 2016-01-01 65081368