Year	current US$
2012	622613.489627838
2013	593050.718307495
2014	473140.001296997
2015	477259.993553162
2016	483709.990978241
2017	528500.020503998
2018	245291.20326042201
2019	172429.993748665
2020	352463.036775589
2021	520600.020885468
2022	713774.800300598