11 per cent; public agencies: 18 per cent; road transport and logistics companies: 8 per cent; railway companies: 3 per cent; port services (pilotage, towing, mooring and hauling services): 3 per cent; general services: 7 per cent; services to the ships including bunkering: 1 per cent; labour services (labour pools ex art. 68): 9 per cent; services to goods (general and chemical control): 0.2 per cent; manufacturing: 16 per cent; constructions: 2 per cent; commerce: 3 per cent; services: 1 per cent.