Year	current US$
1970	46829906.4556215
1971	104294444.315941
1972	174745324.121376
1973	255714368.138982
1974	1267907794.81037
1975	1423046738.05238
1976	1554686672.59892
1977	1629034256.01438
1978	1895508531.00644
1979	3803134362.55562
1980	5507171208.93565
1981	3698214127.38258
1982	1864242558.07744
1983	2670212399.66858
1984	2544804660.96642
1985	2402023553.20209
1986	1799405007.9645
1987	1400866979.78963
1988	1144642706.2
1989	1507821655.03422
1990	2077606565.88328
1991	1085134227.93576
1992	793787551.400849
1993	1065823571.96562
1994	618073084.819101
1995	737563157.926809
1996	886623615.44142
1997	525289018.351046
1998	119212183.155834
1999	346141507.695736
2000	1128701219.72226
2001	1560071172.39927
2002	1462836889.04753
2003	1913755737.68754
2004	2076964101.25564
2005	2571235302.37383
2006	3471309114.50618
2007	3088220095.16456
2008	5379503095.55849
2009	2037489928.76277
2010	2180108753.40273
2011	4127088840.51771
2012	4413825251.47526
2013	4519900254.75198
2014	3926138309.14255
2015	1987875256.63533
2016	1409242158.87881
2017	2173013846.14613
2018	3612219588.25476
2019	2702509559.0839
2020	1267713947.34841
2021	4567851509.90755