Year	Dollars
1992-01-01	195051350
1997-01-01	340908513
2002-01-01	247046950
2003-01-01	273153721
2004-01-01	371885130
2005-01-01	421505891
2006-01-01	358442020
2007-01-01	477274093
2008-01-01	550253419
2009-01-01	363125892
2010-01-01	424993868
2011-01-01	403201902
2012-01-01	410117466
2013-01-01	511073354
2014-01-01	715496009
2015-01-01	663726394
2016-01-01	606402479