Year	2010 U.S. Dollars
1970-01-01	42137.5189947395
1971-01-01	41883.1412123491
1972-01-01	43051.2231750558
1973-01-01	44201.7280770732
1974-01-01	44648.3822216412
1975-01-01	43158.0076054400
1976-01-01	43079.8158044325
1977-01-01	42958.8938568115
1978-01-01	42339.3340715661
1979-01-01	41041.8667765521
1980-01-01	40495.6980158770
1981-01-01	38896.6259416659
1982-01-01	37756.4209028065
1983-01-01	36776.5149572427
1984-01-01	35820.9317453704
1985-01-01	35095.9925402225
1986-01-01	34744.3924512447
1987-01-01	35204.9894579815
1988-01-01	35546.6495470777
1989-01-01	35831.6208246801
1990-01-01	35780.5196725988
1991-01-01	35291.7114092924
1992-01-01	34278.6471002551
1993-01-01	32766.0596707401
1994-01-01	32633.8251274783
1995-01-01	32917.6488213571
1996-01-01	34175.2600684125
1997-01-01	37293.2824132908
1998-01-01	38595.7232096964
1999-01-01	40035.4824490851
2000-01-01	40801.5421300322
2001-01-01	41420.8461776969
2002-01-01	42396.3023980284
2003-01-01	45519.4923839434
2004-01-01	47032.8668884706
2005-01-01	48831.9293599384
2006-01-01	49708.4004893013
2007-01-01	48710.6646202996
2008-01-01	43900.9517028654
2009-01-01	41979.8659013974
2010-01-01	39736.3540626699
2011-01-01	38205.7710887919
2012-01-01	38190.5865853723
2013-01-01	39104.3018490190
2014-01-01	40785.0492283396
2015-01-01	41765.9203531235
2016-01-01	42958.5583925340
2017-01-01	43942.9381865109