Year	current US$
1970	130179586.187136
1971	150218091.95004
1972	166231775.495566
1973	228905077.138474
1974	236581512.723695
1975	321464396.298581
1976	408385222.410789
1977	492136645.793085
1978	638670328.821372
1979	796726396.168344
1980	1042720219.0723
1981	894939713.009685
1982	870406434.202225
1983	847419466.032936
1984	732649082.390328
1985	717377425.221105
1986	835343850.797416
1987	974589308.61805
1988	1040929211.02191
1989	1270206528.47482
1990	1465943774.79587
1991	1439571020.74288
1992	1672245075.43921
1993	1622461705.48446
1994	1729607433.98891
1995	2003426808.44262
1996	2063517077.07752
1997	1850145609.31309
1998	1942297472.17466
1999	2047734160.95733
2000	2095147856.10766
2001	2052513418.04831
2002	2287194293.16759
2003	2774091356.95187
2004	3129875229.67975
2005	4334483190.433
2006	3549618901.45073
2007	4095453047.37376
2008	4800165671.00628
2009	4764010872.39826
2010	4780500879.15221
2011	5182349349.18849
2012	5006678410.82935
2013	5479193385.28344
2014	6070396726.26483
2015	5652584209.82559
2016	5721346724.44556
2017	6069148988.85677
2018	6522118877.91521
2019	6602871551.71519
2020	6249773818.5494
2021	7327930132.94763