Year	current US$
1974	29999.999329447703
1975	69999.99843537807
1976	279999.99746680254
1977	340000.0073015689
1978	1060000.0079721198
1979	1639999.9558925622
1980	2109999.960288407
1981	3120000.0196695295
1982	3499999.9832361927
1983	4619999.943301088
1984	4510000.001639131
1985	7320000.0990182115
1986	8959999.835118651
1987	9789999.812841404
1988	10070000.01333655
1989	7930000.055581334
1990	10390000.144019721
1991	10380000.120028855
1992	13209999.917075047
1993	18540000.10155142
1994	27489999.6034801
1995	44249999.856576316
1996	55759999.29942188
1997	69980000.60580677
1998	72609999.01406474
1999	73440000.77992673
2000	85649999.851361
2001	109660000.30748548
2002	165269999.34948975
2003	205430005.23746005
2004	247559998.01494178
2005	266699998.77922237
2006	337020003.9912014
2007	436879996.1209297
2008	485500001.81235385
2009	386269998.7292291
2010	357950000.04023314
2011	355450000.6251038
2012	310149998.0576335
2013	310760002.8049201
2014	303210002.17646366
2015	242829999.08179042
2016	222809999.72671267
2017	226859997.15887004
2018	230540000.444278
2019	230200000.84675846
2020	232660000.79922363
2021	252230002.58207315
2022	251029999.6938556