Year	constant 2010 US$
1960	18495806931.6209
1961	20568055984.2675
1962	22656971847.0822
1963	25080296524.705
1964	27070967807.7775
1965	29532792307.5779
1966	29509270982.3542
1967	30393079599.0481
1968	35329510461.7458
1969	40122207101.2534
1970	41343550620.7081
1971	45871112198.2297
1972	51442871885.2616
1973	54317223748.4854
1974	57834894772.0854
1975	59710376050.6117
1976	59902943906.4284
1977	60523118608.1001
1978	63885230602.3263
1979	67851108000.7823
1980	68984521194.621
1981	72668244231.6589
1982	74181560399.9
1983	76673394321.9575
1984	77388920942.3061
1985	80513065492.4034
1986	83886679359.6879
1987	89875946120.9412
1988	92491350734.5016
1989	93022941851.2865
1990	99827755317.3581
1991	107540562631.634
1992	115884921075.742
1993	120655620986.597
1994	129617733787.029
1995	138176295348.324
1996	145398381374.575
1997	151115546025.314
1998	156653620470.851
1999	161642170889.081
2000	174120023268.409
2001	174223559665.416
2002	174245451306.842
2003	175876389197.574
2004	183340728381.441
2005	190578853322.1
2006	201256400109.656
2007	212860942076.371
2008	218982204240.467
2009	221531922438.636
2010	233732926323.391
2011	245345262030.369
2012	250537242559.792
2013	260920947050.997
2014	271091373972.813
2015	278051244151.138
2016	289195228612.12
2017	299156882247.14
2018	309055479312.373