Year	current US$
1970	21319999.989122152
1971	25690000.41298568
1972	28309999.614953984
1973	26210000.22813677
1974	50570000.14744696
1975	57409999.63134527
1976	41550000.30063095
1977	53319999.253377356
1978	76250000.59790908
1979	127189999.33823955
1980	165230000.28170642
1981	137189999.31775036
1982	118010001.24402346
1983	130349999.34025116
1984	124310000.52206224
1985	131769999.87475576
1986	146310000.2221763
1987	160499999.8714775
1988	175980000.3375858
1989	216259999.40745518
1990	253549999.04334542
1991	223279999.52249232
1992	279329999.02963644
1993	255460000.4181265
1994	315439997.6134299
1995	299779997.4977971
1996	302780004.0692091
1997	171990001.346916
1998	157999998.7483024
1999	148830000.08016816
2000	142489999.89777803
2001	154189999.25255778
2002	140479999.48263165
2003	139899999.45834282
2004	153560000.06198883
2005	176659999.17685986
2006	192580001.8608571
2007	251450000.13709062
2008	240829997.95675275
2009	250840001.34468085
2010	259490003.07917595
2011	252610001.20639798
2012	211817558.14654762
2013	262938856.9295407
2014	250521899.70016474
2015	291872822.0313787
2016	289678265.6759023
2017	301942602.22464806
2018	301393739.58110803
2019	333275999.8440742
2020	294517001.748085
2021	273905997.5147247
2022	280029001.41477585