Year	current US$
1970	11259999.770671126
1971	10060000.192373995
1972	7770000.247284771
1973	10800000.365823504
1974	7850000.116974115
1975	7309999.8682737285
1976	3180000.0220537195
1977	4589999.809861187
1978	5059999.870136385
1979	6649999.853223563
1980	6379999.950528141
1981	23350000.78007575
1982	15689999.908208847
1983	17759999.69989061
1984	18840000.2066046
1985	14920000.217854984
1986	19340000.562369827
1987	24109999.727457743
1988	32350000.157952324
1989	22080000.378191467
1990	41140000.15705825
1991	117310003.0645728
1992	231779997.93738097
1993	31000000.134110466
1994	25990000.393241648
1995	176179995.83482736
1996	157749993.56269798
1997	130379997.34841289
1998	138430002.08772752
1999	142890002.08303285
2000	148070001.33022678
2001	124670001.70983386
2002	90269997.60605401
2003	79150001.3228506
2004	74600001.20475885
2005	19289999.485015873
2006	20460000.03814696
2007	32359999.656677287
2008	23320000.171661347
2009	31450000.762939464
2010	24789999.30620193
2011	37059999.942779556
2012	48160000.30934812
2013	38429999.35150142
2014	38049998.611211784
2015	59439998.537302084
2016	39100001.737475395
2017	53010001.1080503
2018	39620001.494884476
2019	55839999.79495999
2020	49170000.89585786
2021	44800000.10132792
2022	75990002.03609464