Year	current US$
1970	815589990.4370307
1971	821210004.210473
1972	748800019.3238256
1973	751950001.9364064
1974	1053249987.3731294
1975	1465020018.5775757
1976	1731229992.8069177
1977	1347340000.1525881
1978	1556839991.101996
1979	1820800018.0423272
1980	2562119994.6403546
1981	2193080007.076263
1982	2337669997.200371
1983	1989760017.0969968
1984	2101869946.9566338
1985	1995090010.1661682
1986	2317990014.8510933
1987	2415069944.381714
1988	3319140002.74614
1989	3923369954.1091967
1990	3926680098.1536517
1991	3921270062.8638315
1992	4295409988.045692
1993	3719689997.1067924
1994	4284680036.0530643
1995	3239310050.506147
1996	3436810039.5947704
1997	3125460013.5684013
1998	3006819975.7337575
1999	2652730031.967164
2000	2687340009.6893306
2001	3826990036.0107403
2002	4311740041.255957
2003	3847909986.972816
2004	4555820003.509525
2005	11793370070.934307
2006	17583159964.561474
2007	8949599992.752071
2008	6488689962.387092
2009	8820640062.332153
2010	10714170103.073128
2011	11051200161.933907
2012	9955410044.67011
2013	11361560053.825392
2014	12045330176.353464
2015	11773850083.351135
2016	10686089926.719677
2017	11975550151.824957
2018	11634519974.708576
2019	13270469863.891611
2020	15985200050.354023
2021	15196969879.1504