Year	current US$
1970	11009999.9010563
1971	1929999.9494105587
1972	1289999.965578319
1973	3769999.9511241885
1974	15789999.946951874
1975	5190000.036731358
1976	14580000.018700952
1977	78210000.95456834
1978	103930001.42462552
1979	46930000.53428117
1980	131700000.31962998
1981	224979999.32430694
1982	147260002.4789572
1983	110859999.81127673
1984	121159999.57919124
1985	159510001.89408663
1986	120360000.60848895
1987	132620000.34935778
1988	127019999.59908424
1989	174619997.57215375
1990	101589998.64757086
1991	331020001.4449655
1992	162209993.32703677
1993	237519995.68752944
1994	353649996.3738028
1995	536669998.4446175
1996	477469996.28096855
1997	352369995.897636
1998	375039998.26498306
1999	382550003.0405823
2000	364000003.8333241
2001	539640005.3072714
2002	437039999.615401
2003	310510000.36299235
2004	417280001.7073751
2005	1162389984.0228255
2006	972179992.9775294
2007	1173630006.7342815
2008	1051880006.1214718
2009	326469996.75780547
2010	422449998.291209
2011	305529998.5837191
2012	362729995.7033246
2013	315519996.28357583
2014	372289994.8824194
2015	227320001.52021638
2016	250050002.0068139
2017	306870001.08323985
2018	296500000.83632773
2019	277229997.5343048
2020	288569999.9108909
2021	390119998.7940491
2022	442919998.09071434