Year Dollars 1992-01-01 18740128 1997-01-01 38236928 2002-01-01 26487518 2003-01-01 66103636 2004-01-01 56131844 2005-01-01 55687831 2006-01-01 67135507 2007-01-01 105473886 2008-01-01 159869517 2009-01-01 58842012 2010-01-01 77004177 2011-01-01 98874051 2012-01-01 53877570 2013-01-01 56704508 2014-01-01 42314681 2015-01-01 29784887 2016-01-01 26967747