Year Dollars 1992-01-01 9790908 1997-01-01 37280522 2002-01-01 16717865 2003-01-01 20072973 2004-01-01 25783766 2005-01-01 48715946 2006-01-01 48198248 2007-01-01 41243182 2008-01-01 35078198 2009-01-01 32595445 2010-01-01 35430694 2011-01-01 42023689 2012-01-01 42526385 2013-01-01 39596686 2014-01-01 36491169 2015-01-01 29535028 2016-01-01 23972023