Year	2010 U.S. Dollars
1990-01-01	1298.71729776739
1991-01-01	1338.43937793700
1992-01-01	1466.23794300045
1993-01-01	1481.86304161928
1994-01-01	1572.83907109528
1995-01-01	1654.79807132982
1996-01-01	1634.74268701264
1997-01-01	1566.77459735412
1998-01-01	1551.05943168806
1999-01-01	1501.69194776243
2000-01-01	1252.89414842809
2001-01-01	1122.34614802323
2002-01-01	1062.32544074374
2003-01-01	1102.23683311079
2004-01-01	1127.07831715165
2005-01-01	1158.94557218502
2006-01-01	1209.75067879470
2007-01-01	1267.96835705908
2008-01-01	1326.86962864253
2009-01-01	1235.71779412666
2010-01-01	1290.57236771540
2011-01-01	1428.86099849562
2012-01-01	1461.67125753542
2013-01-01	1473.76478482329
2014-01-01	1475.52804997037
2015-01-01	1482.19059362413
2016-01-01	1502.88704383656
2017-01-01	1521.29430261452