The line graph below illustrate the average monthly change in the costs of three type metals since 2014.
The graph demonsrate that the higgest procent contein to Nickel, however, between january to february the equality slightly decrease from 6 to 4, and during march in droped down to 1. By the period over march and may, the average procent was stable about 1 to 0,5. Furhermore, on half of year Nickel started as the hugest result crashed to new lows as -3. But over end of we can mark that Nickel consistently increas.
On the second side, we can see Copper and Zinc which is had particularly same result of growing and droping. Starting from january, Zinc show meterly growin over 2 procent in one month and the starting point was 1, after that the numbered indicator was glowin down until -1 in middle of 2014. In that time the cost of Copper began to slowly regrace about 0,5 each month before june. Since july over september, and until october, indicators was relatively same varying between -1 and 1, also -2 to 0.5. Close to end of year each line was in stability and actually same.