Year	current US$
1960	408900000
1961	445000000
1962	425500000
1963	439100000
1964	457500000
1965	449700000
1966	479100000
1967	517799999.99999994
1968	552200000
1969	559160000
1970	685690000
1971	697570000
1972	778720000
1973	1143680000
1974	1909610000
1975	2567090000
1976	2613680000
1977	3195610000
1978	2965540000
1979	3661820000
1980	4232170000
1981	4355560000
1982	4316020000
1983	3592910000
1984	3907120000
1985	3865380000
1986	3901140000
1987	4244350000.0000005
1988	4702533149
1989	5488893484
1990	7919206928
1991	7519736703
1992	8020260576
1993	6858404606
1994	8063127566
1995	9501817583
1996	9305336096
1997	8946334494
1998	8427165317.000001
1999	11940723236
2000	11347366124
2001	11309412099
2002	11591791265
2003	13918887137
2004	17480936792
2005	20130220678
2006	22724823908
2007	30641204930
2008	40603789681
2009	32392933701
2010	35138804871
2011	43625423299
2012	42892197900
2013	44741932135
2014	45611266983
2015	37030049124
2016	41686266498
2017	44567330310
2018	50733294684
2019	50384788747
2020	47434228769