Year	Current U.S. Dollars
1998-01-01	23737.4167662171
1999-01-01	23982.8806710129
2000-01-01	22479.5789883920
2001-01-01	24300.3785998986
2002-01-01	26553.7465597833
2003-01-01	30993.0770616633
2004-01-01	34979.0816995871
2005-01-01	35847.4535649984
2006-01-01	40719.5750317748
2007-01-01	47024.2296980726
2008-01-01	49773.1668730863
2009-01-01	46521.5017134755
2010-01-01	47397.9029229641
2011-01-01	50789.0486039991
2012-01-01	48421.8030715067
2013-01-01	53612.8250038773
2014-01-01	57543.6690591516
2015-01-01	50581.9684915586