Year	current US$
1970	0
1971	270000.005140901
1972	819999.992847443
1973	549999.997019768
1974	669999.9775737519
1975	680000.012740493
1976	2739999.87915158
1977	3149999.9910593
1978	2340000.0352412504
1979	4060000.0787526397
1980	5550000.02868474
1981	10039999.9450892
1982	11299999.6971339
1983	13800000.151619298
1984	13560000.3041327
1985	20890000.347048003
1986	35130000.350996904
1987	47300000.147894
1988	72009999.9122322
1989	75799998.07477
1990	86480000.8963794
1991	86730000.3450364
1992	46439999.263733596
1993	17529999.7311085
1994	26300000.0044703
1995	29370000.4611164
1996	31469999.3096292
1997	25340000.4338473
1998	29699999.6174127
1999	35679999.953135796
2000	31870000.205934003
2001	37650000.654161
2002	45250000.0558794
2003	64189999.327063605
2004	82800000.3993511
2005	90489998.9888072
2006	99560000.1756102
2007	121789999.60236299
2008	134440001.379699
2009	147250000.856817
2010	162569998.025894
2011	151699999.243021
2012	175710002.399981
2013	167179999.034852
2014	187159999.012947
2015	155869999.965653
2016	127910000.044852
2017	108959999.866784
2018	87170000.4357845
2019	138939999.55244398
2020	155709999.45700198
2021	161559999.333695
2022	129549999.20539556