Year	current US$
2007	0
2008	0
2009	0
2010	0
2011	0
2012	4114569.90242004
2013	2965619.44484711
2014	4938234.23981667
2015	5568636.11936569
2016	-4393693.09169706
2017	1369477.98728943
2018	4175996.5419769296
2019	7236136.67488098
2020	6864290.23742676
2021	1932160.0212715599
2022	2130131.8109035543