Year	current US$
1960	3635900000
1961	4178200000
1962	4659900000
1963	5038400000
1964	5907500000
1965	7154300000
1966	8026400000
1967	8691100000
1968	10150600000
1969	11732900000
1970	13174200000
1971	15051200000
1972	18532100000
1973	22199800000
1974	30458000000
1975	34807000000
1976	37230300000
1977	45289400000
1978	56031000000
1979	72177200000
1980	77612700000
1981	75236400000
1982	73413300000
1983	72668600000
1984	73247900000
1985	78965100000
1986	97753400000
1987	116234000000
1988	128380000000
1989	140623000000
1990	170275000000
1991	169431000000
1992	177309000000
1993	168194000000
1994	189684000000
1995	232740000000
1996	250552000000
1997	238249000000
1998	242678000000
1999	235082000000
2000	239904000000
2001	244250000000
2002	254484000000
2003	299876000000
2004	353554000000
2005	372729000000
2006	417223000000
2007	500242000000
2008	544635000000
2009	406826000000
2010	446895000000
2011	523404000000
2012	501546000000
2013	518112000000
2014	529797000000
2015	456989000000
2016	461737000000
2017	507418000000
2018	549526000000
2019	537717000000
2020	496120000000