Year	current US$
2011	15200000.047683716
2012	14540276.736021044
2013	17012452.2447586
2014	16526345.387101172
2015	22389666.751027126
2016	16834037.110209484
2017	18325371.17600442
2018	16678128.182888027
2019	19298230.379819863
2020	11488342.911005016
2021	27853700.0119686
2022	19035458.490252502