Year Dollars 1992-01-01 3730679 1997-01-01 5569149 2003-01-01 7941246 2004-01-01 49624721 2005-01-01 8737995 2006-01-01 24094268 2007-01-01 9443253 2008-01-01 14289570 2009-01-01 8004459 2010-01-01 14642171 2011-01-01 13200105 2012-01-01 17993268 2013-01-01 26923807 2014-01-01 23325851 2015-01-01 23264844 2016-01-01 26929446