Year	current US$
1970	6849999.941885472
1971	8779999.980703006
1972	18510000.163689256
1973	14519999.95298684
1974	49730000.251904085
1975	44750000.394880734
1976	23779999.908059828
1977	30309999.93905426
1978	54389999.391511105
1979	82550001.20028849
1980	72780000.0756979
1981	94140000.71212651
1982	141349998.94537032
1983	94779999.50572851
1984	107729998.33710492
1985	66050000.17024578
1986	70130000.55775048
1987	89589999.78937212
1988	95550001.44988298
1989	145769999.48918813
1990	116789999.8389185
1991	109950000.46491615
1992	122369998.3134865
1993	118399999.24413866
1994	154770000.6663798
1995	154229999.56086287
1996	162119999.53165647
1997	140070000.76957047
1998	123209999.98971811
1999	102729999.66144566
2000	135819999.76374206
2001	125289999.78862709
2002	149200002.0481647
2003	189870001.12235546
2004	294690003.1752879
2005	347380005.42856765
2006	338079996.2598828
2007	472500009.89064604
2008	608299995.3031541
2009	589999998.0255961
2010	863799998.767674
2011	1151790011.812001
2012	1321799987.4129887
2013	1066150000.4157422
2014	922800005.5979936
2015	712970004.0053576
2016	546279997.300357
2017	710579994.4773315
2018	603640003.6662818
2019	602530002.5790935
2020	527950002.67587614
2021	764239998.0258193
2022	743620003.1787157