Year	current US$
1970	0
1971	49999.998882412896
1972	1790000.03449619
1973	5680000.18969178
1974	1909999.99828637
1975	3919999.9272823296
1976	1189999.9901652301
1977	2130000.02503395
1978	139999.98755753
1979	1110000.01989305
1980	1159999.9573081702
1981	3419999.88257885
1982	5250000.01862645
1983	6709999.97481704
1984	6410000.01132488
1985	8100000.09275973
1986	10800000.084564101
1987	12839999.8154491
1988	27159999.2066622
1989	25719999.236986
1990	28470000.296831097
1991	42429999.4781613
1992	27880000.079050697
1993	23240000.1790375
1994	12609999.8336285
1995	18069999.7525662
1996	10660000.020638099
1997	13280000.0198185
1998	13130000.108853001
1999	17239999.860525098
2000	15580000.1751631
2001	15430000.109598
2002	21629999.9412149
2003	24529999.4945526
2004	30579999.9106675
2005	23679999.5303154
2006	36140000.6078184
2007	43820000.5404651
2008	51120000.0252575
2009	46049999.596551105
2010	68029999.8857081
2011	69890000.0285357
2012	50519999.6139854
2013	49159999.2960691
2014	47729999.5496869
2015	25479999.827221
2016	13110000.0962615
2017	7640000.07510185
2018	4829999.927431351
2019	4630000.00827014
2020	6110000.0590086
2021	5269999.94181097
2022	2929999.9549984923