Year	current US$
1964	439999.997615814
1965	1509999.9904632599
1966	370000.00476837205
1967	750000
1968	200000.00298023198
1969	419999.986886978
1970	-29999.999329447703
1971	250000
1972	219999.998807907
1973	430000.00715255697
1974	439999.997615814
1975	219999.998807907
1976	660000.026226044
1977	2950000.04768372
1978	1669999.95708466
1979	2859999.89509583
1980	1129999.99523163
1981	50000.0007450581
1982	19999.9995529652
1983	250000
1984	419999.986886978
1985	519999.980926514
1986	550000.011920929
1987	970000.028610229
1988	2309999.94277954
1989	4079999.92370605
1990	2390000.10490417
1991	3210000.03814697
1992	3059999.94277954
1993	2210000.03814697
1994	5260000.228881841
1995	10899999.6185303
1996	8630000.11444092
1997	9479999.54223633
1998	9119999.88555908
1999	6019999.98092651
2000	12649999.6185303
2001	35439998.626709
2002	130800003.051758
2003	98610000.6103516
2004	224009994.506836
2005	219919998.168945
2006	246490005.493164
2007	268709991.455078
2008	322309997.558594
2009	324390014.64843804
2010	234830001.831055
2011	423420013.42773396
2012	433920013.42773396
2013	331230010.986328
2014	325230010.986328
2015	458250000
2016	317570007.324219
2017	292230010.986328
2018	331730010.986328
2019	369799987.792969
2020	289279998.779297
2021	258890014.648438
2022	434559997.558594