Year	Current U.S. Dollars
1970-01-01	14295279.5446937
1971-01-01	15278632.4786325
1972-01-01	18936526.9461078
1973-01-01	31710657.7257811
1974-01-01	85637174.3722131
1975-01-01	55081816.9917528
1976-01-01	41109617.4996945
1977-01-01	38748059.4366822
1978-01-01	45210026.3248255
1979-01-01	42620165.4370668
1980-01-01	38715554.5433842
1981-01-01	41369800.0459664
1982-01-01	40572066.1324678
1983-01-01	37837837.8378378
1984-01-01	41246160.5967530
1985-01-01	32125148.4042182
1986-01-01	32085561.4973262
1987-01-01	33608738.2719507
1988-01-01	42972107.1958747
1989-01-01	41119721.6511150
1990-01-01	39809538.6776989
1991-01-01	47515189.2818196
1992-01-01	47737955.3466510
1993-01-01	46919624.6430029
1994-01-01	54832577.8622606
1995-01-01	56338028.1690141
1996-01-01	66515376.7900462
1997-01-01	67537479.5903221
1998-01-01	65334841.0604347
1999-01-01	69032258.0645161
2000-01-01	67254174.3970315
2001-01-01	63101272.3699183
2002-01-01	72196457.6768445
2003-01-01	90231856.8000519
2004-01-01	102367039.2704810
2005-01-01	112133944.2535320
2006-01-01	108545632.5301200
2007-01-01	130754915.9066190
2008-01-01	139125482.3016270
2009-01-01	130465372.0168460
2010-01-01	153275912.6765730
2011-01-01	177142135.1211960
2012-01-01	188045661.6276660
2013-01-01	187153601.0812900
2014-01-01	178869298.7200290
2015-01-01	169140560.4387350
2016-01-01	181551516.5031220
2017-01-01	196150061.3120780