Year	current US$
1960	461800000
1961	485900000
1962	471300000
1963	530900000
1964	601100000
1965	749900000
1966	781900000
1967	677700000
1968	592100000
1969	890700000
1970	1239300000
1971	1810200000
1972	2179300000
1973	3461300000
1974	9219200000
1975	7994900000
1976	10770500000
1977	11822500000
1978	9955700000
1979	17221700000
1981	19220300000
1982	14155800000
1983	10679700000
1984	11930400000
1985	13115858199
1986	5151504484
1987	7336777378
1988	6885796375
1989	8144977751
1990	10273078734
1991	7726467854
1992	12369696190
1993	11590070643
1994	11318843405
1995	12247866500
1996	16142031717
1997	16524872190.999998
1998	11346372634
1999	13226863955
2000	27156872817
2001	18112755144
2002	18680078954
2003	24190276135
2004	34898336707
2005	45608955260
2006	54032586488
2007	61919932415
2008	91474986761
2009	54535607756
2010	82578965249
2011	112934000000
2012	110041000000
2013	98650855607
2014	99291526864
2015	57857137494
2016	40319158232
2017	49162888680
2018	66493523369.99999
2019	67292199683
2020	45358497866