Year	current US$
2012	26844345.7609974
2013	33970059.510320395
2014	25439070.334657997
2015	35704729.679040596
2016	28799109.5045581
2017	32186030.5881128
2018	27809199.801646203
2019	38463119.700550996
2020	26879846.200346902
2021	29351670.185103998
2022	17864792.915061124