Year Dollars 1992-01-01 4547791 1997-01-01 24591107 2002-01-01 13542168 2003-01-01 5203238 2004-01-01 4049562 2005-01-01 5062339 2006-01-01 6857708 2007-01-01 8889245 2008-01-01 21691621 2009-01-01 19488983 2010-01-01 33687594 2011-01-01 22606334 2012-01-01 31014617 2013-01-01 22109008 2014-01-01 20017768 2015-01-01 16479260 2016-01-01 10887005