Costa Rica Imports of bitumen and asphalt (natural), bituminous or oil shale, tar sands from Grenada was US$828 during 2022, according to the United Nations COMTRADE database on international trade. Costa Rica Imports of bitumen and asphalt (natural), bituminous or oil shale, tar sands from Grenada - data, historical chart and statistics - was last updated on June of 2024.