Year	current US$
1960	292400000
1961	335700000
1962	353200000
1963	375400000
1964	422800000
1965	474400000
1966	457600000
1967	411200000
1968	420000000
1969	484370000
1970	543710000
1971	657120000
1972	764690000
1973	788390000
1974	1847250000
1975	1471800000
1976	1967930000
1977	1788790000
1978	1960730000
1979	2082570000.0000002
1980	3158280000
1981	3101020000
1982	3563860000
1983	2502450000
1984	1901570000
1985	1588090000
1986	1331950000
1987	1165810000
1988	1127860000
1989	1244224876
1990	1229490149
1991	1647033545
1992	1430189658
1993	1386838370
1994	1211670857
1995	1967396550
1996	2147124248
1997	3028101573
1998	3009173856
1999	2742993941
2000	2347161245
2001	3557718336
2002	3666618319
2003	3959672479
2004	4891405637
2005	5719654470
2006	6506826218
2007	7697136411
2008	9634413540
2009	6986632340
2010	6508306545
2011	9598124140
2012	11668910307
2013	12447839542
2014	11462680871
2015	13526652735
2016	12406703342
2017	10752527525
2018	6966862806
2019	3702166343
2020	4947972636