Year	current US$
1972	4000000.005587936
1973	4839999.929070472
1974	5869999.900460237
1975	10269999.917596586
1976	12750000.01303852
1977	7900000.203400848
1978	7900000.229477886
1979	9190000.282600524
1980	7289999.939501288
1981	5230000.032112002
1982	4270000.059157612
1983	4519999.980926517
1984	4500000.093132252
1985	4310000.116005534
1986	3549999.982118602
1987	5389999.909326436
1988	3589999.9104440194
1989	4370000.045746563
1990	12390000.181272615
1991	4329999.947920437
1992	8000000.152736901
1993	10200000.20228326
1994	6989999.968558546
1995	13750000.18067659
1996	14309999.778866772
1997	14659999.962896109
1998	11789999.801665556
1999	12979999.983683223
2000	8639999.901875854
2001	7239999.979734413
2002	8900000.035762787
2003	9290000.017732387
2004	13859999.857842918
2005	14210000.062361363
2006	14500000.113621365
2007	15580000.19937753
2008	17009999.7278303
2009	13019999.84495341
2010	14089999.884366991
2011	15879999.840632074
2012	17509999.822825186
2013	19930000.312626354
2014	20060000.3041327
2015	17290000.196546316
2016	28390000.138431747
2017	29260000.556707405
2018	28179999.82833863
2019	23700000.297278166
2020	24170000.461861458
2021	85219998.34664166
2022	15360000.180080492