Year	current US$
1970	25857182.8159992
1971	24943763.1753705
1972	27151828.0256505
1973	33495146.7379516
1974	37569242.9890368
1975	42368051.4906423
1976	36302723.6524036
1977	41810251.4931311
1978	60006627.7524125
1979	75839783.7510373
1980	89056826.8209917
1981	97260535.3464851
1982	113805664.399816
1983	84185342.7106133
1984	78330856.7973604
1985	54822211.9610791
1986	31501328.7525667
1987	45171495.0220774
1988	70886614.2573653
1989	64469427.1325349
1990	36635707.810643
1991	44021232.0318709
1992	37752811.5367117
1993	42733740.1172031
1994	50549946.2765821
1995	52775344.7844179
1996	57067769.057064
1997	51058257.5646679
1998	40724565.7510651
1999	40042928.5669373
2000	37458782.0478318
2001	65905464.6237616
2002	72242322.2100072
2003	81545914.8438688
2004	84748395.4547921
2005	90096606.836711
2006	103210674.657864
2007	116929025.467545
2008	137423819.211673
2009	132843227.407677
2010	144922606.762135
2011	161827706.741908
2012	200609674.635338
2013	251726692.948618
2014	256034864.658254
2015	220293468.627166
2016	190790947.078999
2017	190497475.976579
2018	206475555.881483
2019	205091560.627623
2020	223451331.05295
2021	220443057.908794