Year	current US$
1970	76430000.2939999
1971	89610000.53025784
1972	97550000.24475156
1973	101489999.55877663
1974	103830000.20124017
1975	156110000.2154708
1976	143240000.73224303
1977	138409999.2737174
1978	169770000.08337203
1979	214199999.30635092
1980	256330000.28133383
1981	299810002.5951863
1982	270200000.9268522
1983	228040001.6084313
1984	226389999.02829525
1985	255520000.23424625
1986	298990000.9408593
1987	319500000.268221
1988	341030000.23961073
1989	339220000.69916254
1990	278239998.55108553
1991	270250001.82166713
1992	255340001.73211107
1993	243900003.85791063
1994	182049997.92762104
1995	167049999.85545874
1996	192049998.54788175
1997	219700000.62696627
1998	192029999.5802343
1999	164240001.16623926
2000	160569999.03917316
2001	131120000.79080461
2002	124170000.77292337
2003	125609999.12582348
2004	154280000.35509467
2005	153420000.91820967
2006	167290001.42402944
2007	162299999.81820577
2008	177770000.78558925
2009	204060000.23707747
2010	209120001.42037868
2011	166219999.35992056
2012	163457271.7414703
2013	153540833.4415406
2014	147768025.85273978
2015	128736391.18485145
2016	101839507.89645317
2017	88829169.78848878
2018	63522262.66823709
2019	87688075.44559246
2020	87136519.20109989
2021	101869762.98689845
2022	118313443.14664601