Year	current US$
1970	0
1971	0
1972	4040000.0158697404
1973	4799999.95417893
1974	6549999.92623925
1975	21529999.8465925
1976	11539999.8929352
1977	11630000.0566989
1978	13300000.121817
1979	12050000.153482
1980	11230000.1997501
1981	11210000.032559
1982	8570000.05058944
1983	8429999.81157482
1984	9999999.94039536
1985	10389999.8217821
1986	9749999.88265336
1987	12739999.907091301
1988	13750000.0391155
1989	14429999.981075501
1990	17589999.7986853
1991	16720000.127330402
1992	18829999.9274313
1993	20140000.0788271
1994	20510000.1078099
1995	29319999.866187602
1996	32920000.5438179
1997	38850000.165402904
1998	34039999.971166305
1999	39219999.9168515
2000	35159999.7133017
2001	36090000.256896
2002	32430000.0593066
2003	43959999.9282509
2004	58359999.3847311
2005	63129999.6059388
2006	78809998.7860769
2007	81359999.7609854
2008	100339998.14465599
2009	106539999.393746
2010	119380000.01199499
2011	125349998.72557801
2012	137259999.845177
2013	141380001.567304
2014	158080000.819638
2015	143919999.187812
2016	135020002.942532
2017	136530001.50434703
2018	161849999.75934598
2019	151429996.814579
2020	164910001.615062
2021	185419999.063015
2022	122669998.60666692