Year	current US$
1960	123900000
1961	126100000
1962	130600000
1963	138100000
1964	155600000
1965	172700000
1966	208400000
1967	200500000
1968	233000000
1969	260524999.99999997
1970	325622000
1971	335365000
1972	327211000
1973	464321000
1974	466977000
1975	410371000
1977	277697000
1981	746474300
1982	759490600
1983	627863971
1984	484136527.9
1985	425219958
1986	478380006
1987	719804977.3000001
1988	782907359
1989	759424483.3000001
1990	912951089.8
1991	725000000
1992	884500366.2
1993	1095099529
1994	1261604192
1995	746880000
1996	791922000
1997	1096233707
1998	817400000
1999	1199900000
2000	1046502923.9999999
2001	1063629349.9999999
2002	1269876759
2003	1812934662
2004	2034750603
2005	2466848736
2006	2914082427
2007	3092589592
2008	4008237252
2009	3764434627
2010	3569538991
2011	6321438734
2012	6197310724
2013	10501563463
2014	8861276065
2015	7925649388
2016	5305825184
2017	5709063799
2018	6790289386
2019	7646460441
2020	7843225205