Year Dollars 1992-01-01 2615004 1997-01-01 5130289 2003-01-01 11583497 2004-01-01 13301517 2005-01-01 10135682 2006-01-01 15785954 2007-01-01 16893246 2008-01-01 8543347 2009-01-01 6607441 2010-01-01 7915007 2011-01-01 11916409 2012-01-01 7693788 2013-01-01 3414304 2014-01-01 5607487 2015-01-01 5036304 2016-01-01 6747736