Year	current US$
1975	50000.0007450581
1994	39999.9991059303
1995	9999.99977648258
1997	90000.0035762787
1999	109999.999403954
2000	50000.0007450581
2001	79999.9982118607
2002	39999.9991059303
2006	119999.997317791
2007	189999.99761581398
2008	129999.995231628
2009	189999.99761581398
2010	119999.997317791
2011	29999.999329447703
2012	19999.9995529652
2017	39999.9991059303
2020	70000.0002980232