Year Dollars 1992-01-01 15202512 1997-01-01 13746622 2002-01-01 22459815 2003-01-01 13467990 2004-01-01 25416248 2005-01-01 28881341 2006-01-01 35890708 2007-01-01 56463164 2008-01-01 61223552 2009-01-01 48551198 2010-01-01 45930551 2011-01-01 32341667 2012-01-01 241261660 2013-01-01 27498521 2014-01-01 34340823 2015-01-01 36679967 2016-01-01 55948222