Year	current US$
1969	21700000
1970	22300000
1971	29900000
1972	31300000
1973	31200000
1974	43119000
1975	61659000
1976	58283000
1977	72584000
1978	98211000
1979	152815000
1980	167316000
1981	161371000
1982	214439000
1983	187579000
1984	185694000
1985	189707000
1986	204799000
1987	219124000
1988	205737383.8
1989	181495610.8
1990	234616228.7
1991	247695546.29999998
1992	223524412.2
1993	197127440.5
1994	233271289.1
1995	233026435.60000002
1996	124995265.6
1997	122747161.5
1998	156954360.4
1999	117656515.5
2000	124553100
2001	116081694
2002	107646203
2003	146187057
2004	169726582
2005	264264248
2006	430172230
2007	319909333
2008	401334413
2009	401289013
2010	508846605
2011	752311372
2012	728595077
2013	721660475
2014	672578844
2015	560585373
2016	625328527
2017	783299128
2018	793473582
2019	887108889
2020	1038940971