Year	current US$
2009	189999.99761581398
2010	129999.995231628
2015	29999.999329447703
2016	180000.00715255702
2017	300000.011920929
2018	479999.989271164
2019	289999.99165535
2020	159999.99642372102
2021	239999.994635582
2022	219999.998807907