From the line graph, we can see the average monthly rise or fall in how much copper, nickel and zinc cost throughout 2014,
Overall, nickel started with the highest percentage change of the three but ended with the lowest. Zinc started with the smallest change and erided with the highest, and copper prices fluctuated. Prices for all three metals dipped in June.
In January the price of nickel was up six per cent, but this dropped to negative three percent in June, ending the year with a one percent increase in both November and December. Copper began the year with an increase of two percerit and by May. the price was dropping (by slightly less than one per cent). It rose again, increasing by a percentage point in July, August and September. Zinc saw its most dramatic increase in February, with three per cent and the price fell in June (a one percent decrease). The change was negative until October/November when it began to rise.