Year	current US$
1991	150000.005960464
1992	200000.00298023198
1993	189999.99761581398
1994	140000.000596046
1995	180000.00715255702
1996	109999.999403954
1997	39999.9991059303
1998	9999.99977648258
2001	9999.99977648258
2002	250000
2003	19999.9995529652
2004	9999.99977648258
2005	9999.99977648258
2006	29999.999329447703
2009	59999.9986588955
2010	79999.9982118607
2011	59999.9986588955
2012	9999.99977648258
2013	9999.99977648258
2014	19999.9995529652
2015	19999.9995529652
2016	270000.010728836
2017	109999.999403954
2018	219999.998807907
2019	579999.983310699
2020	500000
2021	300000.011920929
2022	239999.994635582