11-May	14-May	15-May	16-May	17-May	18-May	21-May	22-May	23-May	24-May	25-May	29-May	30-May	31-May	
Aluminum	11	6	13	7	0	0	7	7	8	2	0	4	6	12	
Copper	4	2	3	3	5	5	14	8	2	5	1	1	4	3	
Gas	5	3	3	15	5	6	14	19	8	5	8	12	6	5	
Total	20	11	19	25	10	11	35	34	18	12	9	17	16	20	


Note: Transactions are in pairs, therefore the number of gas transactions for May 31 is 10 etc.