Year	2010 U.S. Dollars
1981-01-01	1440.62457057807
1982-01-01	1521.95119459128
1983-01-01	1570.55459325077
1984-01-01	1621.17341847515
1985-01-01	1668.49738977156
1986-01-01	1774.66024555783
1987-01-01	1784.53974470075
1988-01-01	1825.09584145962
1989-01-01	1855.79956844396
1990-01-01	1761.21738631060
1991-01-01	1583.61799473159
1992-01-01	1420.64361176887
1993-01-01	1363.65346773654
1994-01-01	1382.19592800089
1995-01-01	1459.10628366092
1996-01-01	1479.78784984085
1997-01-01	1524.86010415389
1998-01-01	1562.48055652630
1999-01-01	1596.51170986498
2000-01-01	1600.47948399220
2001-01-01	1632.52467477292
2002-01-01	1693.08113756829
2003-01-01	1792.87316802072
2004-01-01	1961.49189295871
2005-01-01	2079.11237039914
2006-01-01	2229.15453500815
2007-01-01	2425.68184001699
2008-01-01	2604.92891547148
2009-01-01	2533.17573698752
2010-01-01	2650.35364830438
2011-01-01	3053.61226793293
2012-01-01	3365.57197529809
2013-01-01	3685.74784533092
2014-01-01	3901.86660444895
2015-01-01	3923.62846916544
2016-01-01	3906.11587467046
2017-01-01	4071.09328952564