Year Dollars 1992-01-01 14222565 1997-01-01 23294675 2002-01-01 20664995 2003-01-01 26298187 2004-01-01 28585812 2005-01-01 38862068 2006-01-01 29530369 2007-01-01 37575655 2008-01-01 29193023 2009-01-01 20100350 2010-01-01 26551805 2011-01-01 35186575 2012-01-01 40679409 2013-01-01 37649474 2014-01-01 32317004 2015-01-01 36931353 2016-01-01 28084919