Of the total freight tonnage at major ports in Wales, 87.4% was international traffic with just over three quarters (76.9%) of this international traffic being imports.
O'r holl nwyddau a gludwyd trwy borthladdoedd mawr Cymru, roedd 87.4% ohono o ran pwysau yn draffig rhyngwladol gydag ychydig dros dri chwarter (76.9%) o'r traffig rhyngwladol hwn yn fewnforion.