Year	current US$
1967	19999.9995529652
1976	29999.999329447703
1977	19999.9995529652
1978	19999.9995529652
1979	9999.99977648258
1980	9999.99977648258
1982	9999.99977648258
1983	9999.99977648258
1987	9999.99977648258
1988	19999.9995529652
1989	9999.99977648258
1990	29999.999329447703
1991	39999.9991059303
1992	9999.99977648258
1995	1960000.03814697
1996	959999.978542328
1997	330000.013113022
1998	189999.99761581398
1999	270000.010728836
2001	39999.9991059303
2007	79999.9982118607
2008	680000.007152557
2010	8930000.30517578
2011	589999.973773956
2012	150000.005960464
2013	529999.971389771
2014	50000.0007450581
2015	29999.999329447703
2016	159999.99642372102
2017	39999.9991059303
2018	39999.9991059303
2019	39999.9991059303
2021	50000.0007450581