Year Dollars 1992-01-01 1784876 1997-01-01 9075545 2002-01-01 5972599 2003-01-01 5034599 2004-01-01 6448052 2005-01-01 10535615 2006-01-01 11298311 2007-01-01 14235841 2008-01-01 15656526 2009-01-01 23938624 2010-01-01 19977106 2011-01-01 26079032 2012-01-01 28443136 2013-01-01 19879933 2014-01-01 21278962 2015-01-01 22342962 2016-01-01 24819659