Year	current US$
1970	1149999.9854713676
1971	359999.9919533726
1972	189999.9957531687
1973	1100000.0014901161
1974	259999.99791383746
1975	6030000.20980835
1976	9089999.91416931
1977	17069999.69482421
1978	17330000.609159466
1979	22909999.705851033
1980	21029999.494552594
1981	20749999.50453637
1982	20980000.331997916
1983	16349999.852478504
1984	15220000.142231584
1985	16220000.324770814
1986	16530000.478029251
1987	21459999.442100547
1988	28810000.032186434
1989	26069999.7562915
1990	25869999.65831641
1991	39729999.806732
1992	31030000.10363761
1993	35839999.91416934
1994	24599999.56004317
1995	26999999.970197674
1996	28590000.167489056
1997	26429999.85255301
1998	46460000.80555679
1999	17429999.9140203
2000	22469999.97645616
2001	24239999.769255515
2002	28609999.78892505
2003	49770000.00886616
2004	80480000.92804436
2005	106070000.78260905
2006	95599998.88390297
2007	172860000.18380576
2008	113820000.9688736
2009	123150001.1086464
2010	127570002.3248791
2011	178729999.06353652
2012	146819997.85080558
2013	156359999.78333706
2014	139479998.96109104
2015	107529999.15927643
2016	136410001.79946426
2017	146540001.3513863
2018	196580004.84108922
2019	187669997.39035964