Year	current US$
1960	16022028000
1961	17004417000
1962	16879183000
1963	18553575000
1964	21554485000
1965	22582181000
1966	24668354000
1967	27001664000
1968	29355717000
1969	30215814636
1970	36787909455
1971	35181952545
1972	43027262000
1973	62987235000
1974	99917392182
1975	95163569727
1976	109959074182
1977	129212778182
1978	152219350182
1979	203841741752
1980	260606185425
1981	281088580403.407
1982	269944037957.17798
1983	269021519665.87997
1984	288265240038.4941
1985	280683581620.594
1986	247537541708.46802
1987	289510323805.046
1988	331449563589.41003
1989	369883801008.02
1990	417892322984.8799
1991	445992608371.89
1992	534033152762.213
1993	574353288230.6301
1994	703481542657.32
1995	862509700154.0001
1996	933034050128.44
1997	1018389072595.7701
1998	975524764835.9501
1999	1048190090615.9001
2000	1300610514572
2001	1262870053705
2002	1388083436509
2003	1676580123767
2004	2141422053885
2005	2655458551294
2006	3250179894376
2007	3898518550965
2008	4781410865839
2009	3664552774127
2010	4774568564021
2011	5852111577944
2012	6087540593357
2013	6241510217019
2014	6313119971243
2015	5543888195995
2016	5269743649440
2017	5912505877500
2018	6583588598654
2019	6472342962551
2020	6182214127395