Year	current US$
1974	420000.016689301
1975	200000.00298023198
1976	579999.983310699
1977	780000.0309944149
1978	2430000.0667572
1979	3869999.8855590797
1980	5299999.713897711
1981	5420000.07629395
1982	7639999.8664856
1983	8029999.73297119
1984	7829999.92370605
1985	9190000.53405762
1986	11260000.2288818
1987	13380000.1144409
1988	11439999.5803833
1989	11050000.1907349
1990	12739999.7711182
1991	18430000.3051758
1992	17239999.7711182
1993	23430000.3051758
1994	27549999.237060502
1995	48659999.8474121
1996	58590000.1525879
1997	58880001.0681152
1998	56849998.4741211
1999	67449996.9482422
2000	68580001.8310547
2001	81589996.3378906
2002	111349998.47412099
2003	141029998.779297
2004	154559997.55859402
2005	187839996.33789098
2006	223990005.493164
2007	284570007.324219
2008	324790008.544922
2009	234970001.220703
2010	203949996.94824198
2011	201369995.117188
2012	170440002.44140598
2013	157750000
2014	153850006.10351598
2015	122099998.47412099
2016	117709999.084473
2017	123339996.337891
2018	120129997.253418
2019	120459999.084473
2020	121090003.967285
2021	123720001.22070299
2022	179489999.85121185