Year	current US$
1972	19999.9995529652
1976	29999.999329447703
1978	9999.99977648258
1980	100000.00149011599
1981	39999.9991059303
1982	19999.9995529652
1983	150000.005960464
1984	29999.999329447703
1985	19999.9995529652
1986	400000.00596046395
1987	219999.998807907
1988	379999.99523162795
1989	1159999.9666214
1990	1779999.97138977
1991	2079999.9237060498
1992	400000.00596046395
1993	-119999.997317791
1994	9999.99977648258
1995	239999.994635582
1996	159999.99642372102
1997	90000.0035762787
1998	119999.997317791
1999	109999.999403954
2000	50000.0007450581
2001	119999.997317791
2002	150000.005960464
2003	699999.988079071
2004	50000.0007450581
2005	109999.999403954
2006	129999.995231628
2007	209999.993443489
2008	400000.00596046395
2009	579999.983310699
2010	180000.00715255702
2011	540000.021457672
2012	330000.013113022
2013	439999.997615814
2014	479999.989271164
2015	409999.99642372096
2016	119999.997317791
2017	109999.999403954
2018	119999.997317791
2019	109999.999403954
2020	180000.00715255702
2021	230000.004172325