Year	constant 2010 US$
1970	37691202656.2137
1971	38999045053.4082
1972	41530008401.9662
1973	43490817882.3796
1974	45343626508.2942
1975	47908554854.4757
1976	48576787121.5352
1977	52565572944.2375
1978	56343318087.0703
1979	58074768640.5171
1980	59863082033.5694
1981	61853658615.8498
1982	63266067370.0433
1983	63111507698.2086
1984	65859617853.1493
1985	67891792091.1947
1986	67600990729.7376
1987	70753286621.1642
1988	74444778621.2823
1989	78772938145.2784
1990	85442270993.2487
1991	87090998789.8115
1992	90002689668.8859
1993	92426110413.8068
1994	97745997381.35
1995	107163259600.323
1996	115108589589.206
1997	127659719260.394
1998	138755064481.791
1999	153329285355.66
2000	167812387283.805
2001	176670248769.236
2002	187128802633.068
2003	192780034508.408
2004	205737461843.32
2005	217464680701.833
2006	228492099371.486
2007	240657629484.352
2008	229875245099.76
2009	218199392454.475
2010	222148757313.006
2011	222911706854.595
2012	223414851599.817
2013	226434602667.606
2014	245809905106.814
2015	307661903821.492
2016	318977141910.939
2017	344958774724.06
2018	373141461521.609