Year	current US$
1960	311000000
1961	332200000
1963	386100000
1964	430800000
1965	489800000
1966	532600000
1967	452770000
1968	507760000
1969	502810000
1970	534710000.00000006
1971	645870000
1972	859810000
1973	1252660000
1981	3706727962
1982	3377274880
1983	3593439250
1984	2950134109
1985	2065690880
1986	2046242952
1987	1820689063
1988	2370993101
1989	2245548349
1990	2515287988
1991	3751775004
1992	4119586118.9999995
1993	4587003311
1994	5539374812
1995	6769173014
1996	7559498471
1997	7456718000
1998	7059834000
1999	6206050000
2000	6200559959
2001	7261602278
2002	6394884728
2003	7080349651
2004	9268416047
2005	9243208321
2006	9295005571
2007	11618027544
2008	15950933831
2009	16202412982
2010	17933149529
2011	20865923689
2012	22695405320
2013	22799498726
2014	22072986761
2015	18948098734
2016	19361013783
2017	19895844507
2018	20377711844
2019	19619874934
2020	11207444797
