Year	current US$
2011	5230000.08054078
2012	4733260.750770572
2013	6080170.19927501
2014	6067776.871845117
2015	7556997.150182714
2016	7297086.841426787
2017	6468886.159360399
2018	4524673.169478778
2019	6626139.700412742
2020	3840093.493461609
2021	5623400.002717973
2022	3949755.94803691