Year	current US$
1971	920000.031590461
1972	499999.9962747095
1973	309999.9893456699
1974	159999.99642372128
1975	209999.99903142446
1976	1230000.011622901
1977	2009999.9997764826
1978	250000.0055879351
1979	639999.9987334014
1980	2639999.9316781713
1981	4820000.177249312
1982	4140000.101178887
1983	7540000.105276704
1984	12309999.851509916
1985	15249999.968335029
1986	19260000.169277158
1987	28360000.073909774
1988	41990000.33736224
1989	55900001.25765804
1990	47109999.209642336
1991	55640000.075101964
1992	44940000.11309983
1993	20760000.31642616
1994	20450000.10728836
1995	17169999.95708466
1996	13389999.926090255
1997	13109999.991953375
1998	19580000.042915314
1999	13300000.011920929
2000	14090000.212192524
2001	17500000.02793967
2002	25570000.082254384
2003	24099999.859929066
2004	20469999.726861674
2005	48470000.151544765
2006	42690000.429749444
2007	49840000.428259365
2008	57799999.04334545
2009	71140001.93774702
2010	76720000.86307521
2011	73299999.65429306
2012	69210002.28822224
2013	72379999.07135966
2014	87460001.34944914
2015	60469999.730586976
2016	63520000.84519391
2017	46939999.40156934
2018	47520000.66637991
2019	43280000.67546963
2020	51880000.72538853
2021	63599999.14467333
2022	45659999.31097032