Year	Current U.S. Dollars
1968-01-01	247.679808970692
1969-01-01	268.858792175421
1970-01-01	296.422519632683
1971-01-01	332.961200477739
1972-01-01	395.651336691621
1973-01-01	518.447872771807
1974-01-01	918.502346975893
1975-01-01	975.021668856980
1976-01-01	1177.755191560590
1977-01-01	1326.541353900380
1978-01-01	1366.589633429270
1979-01-01	1731.308062655550
1980-01-01	2164.504985917780
1981-01-01	2165.371598594420
1982-01-01	2086.251617050600
1983-01-01	2049.763351929290
1984-01-01	2009.870536818210
1985-01-01	1974.580157572170
1986-01-01	1957.290433288990
1987-01-01	1761.715124913760
1988-01-01	1699.224065730060
1989-01-01	1700.728603125040
1990-01-01	2151.463410151810
1991-01-01	2108.309159843690
1992-01-01	2259.073636391160
1993-01-01	2222.973134762380
1994-01-01	2268.633821128020
1995-01-01	2468.932040327950
1996-01-01	2738.783189229200
1997-01-01	2784.096257667320
1998-01-01	2651.429563065480
1999-01-01	2784.784170608850
2000-01-01	3048.237009321610
2001-01-01	3003.177229901590
2002-01-01	2936.079905048290
2003-01-01	3245.973954857240
2004-01-01	3716.494316066610
2005-01-01	4384.915333204690
2006-01-01	5026.666551576500
2007-01-01	5833.362033295090
2008-01-01	7117.492298721350
2009-01-01	6229.030788399500
2010-01-01	7126.771932638350
2011-01-01	8276.272940949620
2012-01-01	8832.069226354740
2013-01-01	8602.500553851670
2014-01-01	8471.517876702840
2015-01-01	7323.031083362190
2016-01-01	7195.352316695960
2017-01-01	7349.947863353720