Year	current US$
1960	93300000
1961	96500000
1962	116800000
1963	129800000.00000001
1964	129699999.99999999
1965	131970000
1966	139720000
1967	158090000
1968	195190000
1969	152440000
1970	210300000
1971	216770000
1972	327470000
1973	532750000
1974	1123990000
1975	935860000
1976	1263030000
1977	1439910000
1978	1562280000
1979	2109800000.0000002
1980	2483200000
1981	2540270000
1982	2139889999.9999998
1983	2227460000
1984	2580070000
1985	2905610000
1986	2171080000
1987	1998570000
1988	2192904500
1989	2353901300
1990	2714430900
1991	2851415300
1992	3007918500
1993	3020135000
1994	3843365400
1995	4357814300
1996	4892329613
1997	5214387392
1998	4203221386
1999	5001681142
2000	4927310878
2001	4675756029
2002	5037994357
2003	6222583482
2004	7745948369
2005	10078373836
2006	12716343876
2007	14273906064
2008	18413024534
2009	13651694862
2010	17408594730
2011	21787002815
2012	23567395261
2013	24959309936
2014	25721730719
2015	18365780829
2016	16797666339
2017	19092352251
2018	21627977662
2019	22329379251
2020	20229840979