Year	current US$
1975	19999.9995529652
1981	9999.99977648258
1983	90000.0035762787
1984	79999.9982118607
1985	419999.986886978
1986	469999.998807907
1987	189999.99761581398
1988	310000.002384186
1989	159999.99642372102
1990	129999.995231628
1991	219999.998807907
1992	59999.9986588955
1993	29999.999329447703
1997	39999.9991059303
2003	19999.9995529652
2004	39999.9991059303
2005	79999.9982118607
2007	39999.9991059303
2008	79999.9982118607
2009	170000.00178813902
2010	259999.990463257
2011	259999.990463257
2012	389999.98569488496
2013	500000
2014	560000.002384186
2015	360000.01430511504
2016	280000.001192093
2017	129999.995231628
2018	189999.99761581398
2019	189999.99761581398
2020	170000.00178813902
2021	219999.998807907