Year	current US$
1997	19999.9995529652
1998	39999.9991059303
2001	29999.999329447703
2002	109999.999403954
2005	129999.995231628
2007	159999.99642372102
2009	79999.9982118607
2010	9999.99977648258
2011	19999.9995529652
2012	129999.995231628
2013	9999.99977648258
2016	349999.99403953605
2017	140000.000596046
2019	79999.9982118607
2020	200000.00298023198
2022	250000