Year Dollars 1992-01-01 4944682 1997-01-01 11220657 2002-01-01 42573874 2003-01-01 51794879 2004-01-01 50323222 2005-01-01 28546380 2006-01-01 40285134 2007-01-01 55008440 2008-01-01 36536875 2009-01-01 30126328 2010-01-01 28361316 2011-01-01 50462836 2012-01-01 37337674 2013-01-01 47248950 2014-01-01 56732326 2015-01-01 56230645 2016-01-01 43390392