Year	Current U.S. Dollars
1973-01-01	8108053514.97237
1974-01-01	12522859678.63420
1975-01-01	19439919254.16850
1976-01-01	10105296949.49490
1977-01-01	9608855565.61086
1978-01-01	13238224497.35450
1979-01-01	15535719093.29830
1980-01-01	18156941569.76740
1981-01-01	20590758873.92900
1982-01-01	18847155688.62280
1983-01-01	18122979797.97980
1984-01-01	19452920000.00000
1985-01-01	22655346153.84620
1986-01-01	22202166666.66670
1987-01-01	24866935483.87100
1988-01-01	27184294207.08660
1989-01-01	29418568376.62910
1990-01-01	32234055489.78890
1991-01-01	31618548375.35010
1992-01-01	32478635867.37400
1993-01-01	34069217830.68780
1994-01-01	34824471356.60850
1995-01-01	39096763694.02980
1996-01-01	47649633251.83370
1997-01-01	49613348946.13580
1998-01-01	51415660792.95150
1999-01-01	52841410149.75040
2000-01-01	55101749155.23750
2001-01-01	55629781319.49590
2002-01-01	56908044576.00560
2003-01-01	62584110535.40590
2004-01-01	67925445897.74080
2005-01-01	72520666666.66670
2006-01-01	75870230199.52350
2007-01-01	84719837822.18360
2008-01-01	98684113103.04620
2009-01-01	110602682464.56500
2010-01-01	124617096900.55300
2011-01-01	138823234444.33100
2012-01-01	144641656947.69200
2013-01-01	162054146628.50200
2014-01-01	184407434331.99700
2015-01-01	207742686491.09900
2016-01-01	234168452310.22000
2017-01-01	260454550050.55600