Year	Current U.S. Dollars
1968-01-01	200695183.709384
1969-01-01	184443443.261644
1970-01-01	198048253.197657
1971-01-01	213251055.718916
1972-01-01	248509396.231886
1973-01-01	323717979.891649
1974-01-01	409360471.615028
1975-01-01	445826633.795442
1976-01-01	465836884.547985
1977-01-01	497223910.083731
1978-01-01	517346296.006904
1979-01-01	612670512.134641
1980-01-01	682187109.376530
1981-01-01	697451758.109868
1982-01-01	704608285.292939
1983-01-01	726085472.423210
1984-01-01	687832907.108049
1985-01-01	630802341.279102
1986-01-01	732617866.218487
1987-01-01	832107048.544603
1988-01-01	885477787.192944
1989-01-01	921286680.408089
1990-01-01	960582145.740710
1991-01-01	1382463561.280750
1992-01-01	1397804896.181640
1993-01-01	1181247039.054350
1994-01-01	1241225319.037020
1995-01-01	1340978853.030020
1996-01-01	1466767947.559430
1997-01-01	1418819202.781640
1998-01-01	1401055789.065980
1999-01-01	1435324422.234310
2000-01-01	1307435087.327190
2001-01-01	1263314035.060950
2002-01-01	1380277350.959060
2003-01-01	1620774859.521730
2004-01-01	1899044740.377360
2005-01-01	2249045131.159280
2006-01-01	2966416679.076690
2007-01-01	3295957072.424840
2008-01-01	3955725879.827970
2009-01-01	3722515282.264730
2010-01-01	4274665077.556670
2011-01-01	5024090298.358950
2012-01-01	5034933474.504350
2013-01-01	5555465840.130000
2014-01-01	5248992933.135110
2015-01-01	4663755043.000780
2016-01-01	4622785899.945470
2017-01-01	4967306925.005720