Year	current US$
1970	33899999.439716384
1971	35499999.7019767
1972	41989999.771118104
1973	50819999.88853925
1974	91320000.23126602
1975	100360000.49114227
1976	85870000.59336428
1977	68379997.67065045
1978	85759998.61955643
1979	91389999.85903494
1980	133189999.30098644
1981	143949998.34150076
1982	157959998.83860347
1983	145569999.97235832
1984	165369999.05668196
1985	143370001.13911918
1986	183969999.36550856
1987	218019998.54110184
1988	254289997.4230678
1989	251119997.89997977
1990	327149999.1826712
1991	337450002.5827439
1992	227130001.3270228
1993	244980003.68475914
1994	301570004.5488776
1995	258899995.2338632
1996	254830002.54817286
1997	145940000.7370859
1998	137739998.40766189
1999	133349998.38098882
2000	70410000.571981
2001	50550001.24871727
2002	116000000.41723242
2003	1660000.922158382
2004	115229999.57203865
2005	104420000.11913486
2006	166590000.8566678
2007	206370003.0948967
2008	172919998.49677077
2009	234180002.54780057
2010	211560001.32486215
2011	257579997.50226754
2012	249700000.87842333
2013	229890003.48560506
2014	258229994.78876594
2015	202510001.0447203
2016	86430001.96479261
2017	211880001.43691888
2018	228189999.66420233
2019	192309997.23263085
2020	434439985.81729835
2021	107940003.73221934
2022	265879999.23527262