Year	current US$
1970	92270000.92342503
1971	106660000.22366637
1972	82789999.60422514
1973	156359999.96028835
1974	226609999.71628195
1975	231940000.77806413
1976	180640003.66255635
1977	157239999.3781001
1978	280059999.22752374
1979	420459995.3293795
1980	237780001.9904973
1981	304810000.2408029
1982	263549997.21050254
1983	199309999.58515185
1984	276640000.64134586
1985	216389999.65786925
1986	356409996.86718
1987	314719998.25537205
1988	600530007.362366
1989	637299999.2370601
1990	651900003.1948087
1991	702560005.7318804
1992	849210000.753402
1993	672919999.9570853
1994	828700008.6307528
1995	715810002.3269653
1996	762099997.8780742
1997	581649992.3467638
1998	654690000.1764297
1999	463219996.5119362
2000	340579998.4931945
2001	591319998.2643133
2002	660890000.8201597
2003	764670000.5531307
2004	992090003.0136111
2005	996169992.685317
2006	1088349989.891052
2007	1449980004.549027
2008	1701680006.5040596
2009	1594279996.6335292
2010	1553469985.9917173
2011	1490450007.9601994
2012	1687079989.6717076
2013	1742729963.2877114
2014	2058239996.4332597
2015	1708420000.5531323
2016	1804049984.0527763
2017	1897800023.794174
2018	2143880002.4986262
2019	1724059986.770153