Year	current US$
1970	10020000.057294969
1971	14149999.827146534
1972	31739999.672397964
1973	38109999.939799294
1974	61790000.83357094
1975	81040000.28409068
1976	72140000.16823415
1977	64579999.7039139
1978	92689999.91379675
1979	80700000.99577005
1980	101590000.42453416
1981	131739999.99836089
1982	188049999.25196168
1983	149929999.59737077
1984	176899999.14169306
1985	197359997.3153323
1986	156430000.27909872
1987	212009998.47427014
1988	227479998.19740644
1989	240420000.81017616
1990	239340001.4769285
1991	239280000.82820642
1992	233480000.1084807
1993	165669999.93473294
1994	147130000.01758343
1995	128600002.08765265
1996	121660001.36733063
1997	111019999.86544248
1998	102390000.45321874
1999	101679999.79853629
2000	95579999.71136457
2001	96639999.71747398
2002	103440000.77061358
2003	278820001.0377915
2004	302970000.80347055
2005	376599997.6992609
2006	368020001.500845
2007	466139997.98893934
2008	543850013.0958858
2009	582470002.9343362
2010	625110006.3249472
2011	623819996.7741964
2012	744230006.8382182
2013	685979993.4495246
2014	549000006.0163437
2015	461729998.80090404
2016	419749996.5373428
2017	491650000.1475211
2018	448449995.81575406
2019	439629997.7675081