Year	current US$
1970	29791726.8712807
1971	50068655.3013925
1972	52543644.7589587
1973	86630534.8162219
1974	438387911.173593
1975	400677415.630405
1976	400776184.209497
1977	318641343.716426
1978	329472490.597883
1979	773449457.577948
1980	980902422.552604
1981	913283210.902118
1982	598394975.644222
1983	836864493.318164
1984	822990124.808974
1985	823355455.180751
1986	640876788.369252
1987	1269812882.96195
1988	912676029.577774
1989	1537083106.06074
1990	2362867098.65744
1991	1291016288.1813
1992	1232291972.5127
1993	1208174934.41034
1994	1169987738.54119
1995	1904489667.137
1996	2620757688.25084
1997	2458131064.40479
1998	1540579835.44598
1999	2984563578.51436
2000	4566699802.56825
2001	3000052360.20713
2002	3065364312.46767
2003	3130092448.55693
2004	4541834539.0704
2005	6460968680.87223
2006	7926972240.46093
2007	8761838436.04132
2008	14944514125.9705
2009	8038318364.16015
2010	13133369174.6787
2011	24266907157.8608
2012	23118575760.0216
2013	22237117869.4211
2014	19636480724.4114
2015	8029771113.87747
2016	5747900674.71661
2017	8268707884.78634
2018	12833814331.1424
2019	10671229028.2442
2020	4495435390.04956
2021	10958800526.9243