Year	2010 U.S. Dollars
1990-01-01	3102.46277600103
1991-01-01	3063.72990913923
1992-01-01	2763.64748261153
1993-01-01	2547.87401173149
1994-01-01	2252.41245409366
1995-01-01	2024.69473609876
1996-01-01	2088.35155289774
1997-01-01	2336.31167738165
1998-01-01	2544.63465405335
1999-01-01	2642.24233304862
2000-01-01	2808.69399564789
2001-01-01	2956.54061820760
2002-01-01	3125.53891161450
2003-01-01	3369.17210775321
2004-01-01	3780.63623184238
2005-01-01	4164.36201252728
2006-01-01	4608.93208753886
2007-01-01	5028.32001864197
2008-01-01	5560.38190408405
2009-01-01	5583.93852426094
2010-01-01	6029.39679982930
2011-01-01	6375.34503859546
2012-01-01	6491.67338247292
2013-01-01	6557.10657206217
2014-01-01	6664.09724918665
2015-01-01	6398.68973515141
2016-01-01	6229.20674452567
2017-01-01	6375.81728989233