Year Dollars 1992-01-01 6126404 1997-01-01 5591845 2002-01-01 1237849 2003-01-01 828233 2004-01-01 2561119 2005-01-01 1680055 2006-01-01 1735351 2007-01-01 7575572 2008-01-01 6318559 2009-01-01 6749468 2010-01-01 4667288 2011-01-01 4814556 2012-01-01 4820906 2013-01-01 4554274 2014-01-01 5475557 2015-01-01 7171366 2016-01-01 6297968