Year	current US$
1970	194179995.3263257
1971	204429999.79481056
1972	271429994.60548186
1973	447620006.3582517
1974	526189995.43972355
1975	570059998.5178559
1976	569919998.060912
1977	587790010.0201372
1978	948019991.6288259
1979	970370003.6406515
1980	1024760003.9578977
1981	1144299991.803244
1982	1382550011.3572936
1983	1539980014.132336
1984	1614830020.3047702
1985	1547630024.651067
1986	2172160034.434869
1987	3273710023.5056143
1988	3492989957.589656
1989	3940129991.2575636
1990	4366570061.564446
1991	5953730039.298539
1992	5832970008.028675
1993	5095830108.7189455
1994	5611720009.971408
1995	5911300028.383729
1996	4683750037.230551
1997	3555709961.008282
1998	5000989979.609845
1999	6902129992.378881
2000	5596679975.816981
2001	4338890017.31761
2002	3837599995.8738694
2003	3514690063.8118386
2004	3038050013.387576
2005	7005540075.018999
2006	2395029965.2572722
2007	2349899981.5378327
2008	2859579974.1614623
2009	1950010027.265173
2010	2014960021.5125828
2011	1022599982.1107872
2012	471829964.8780379
2013	415180050.20916635
2014	945360036.9244795
2015	839000058.7291999
2016	1107220059.7189426
2017	1126550030.0787404
2018	-125019992.20252368
2019	760179996.9375131
2020	1758020006.8186975
2021	3155170007.1245427
2022	5788419956.153267