Year	current US$
1960	513400000
1961	538600000
1962	536000000
1963	500600000
1964	585300000
1965	452100000
1966	674400000
1967	496600000
1968	644380000
1969	685490000
1970	844050000
1971	929470000
1972	858970000
1973	1062339999.9999999
1974	1597230000
1975	1494780000
1976	1707940000
1977	2027830000
1978	2836290000
1979	3233090000
1980	4661710000
1981	5198490000
1982	5477630000
1983	4967990000
1984	4492420000
1985	4130700000
1986	3930620000
1987	4227330000
1988	5065430000
1989	5010490959
1990	5589408908
1991	4955162054
1992	6693422000
1993	9809039000
1994	11941295466
1995	13859154727
1996	14355311260
1997	15377123409
1998	14678282247
1999	10659531384
2000	11889731356
2001	12546236347
2002	11973653823
2003	13592586444
2004	15978232055
2005	21131210483
2006	25467345037
2007	32586092254
2008	39668695252
2009	32897585545
2010	40682063659
2011	54645032594
2012	58586595473
2013	59395048543
2014	64026409626
2015	54057599482
2016	44285431654
2017	45709134525
2018	50816451960
2019	52269957773
2020	43183713134