The graph below shows the average monthly change in the prices of three metals during 2014. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram demonstrates how the average selling prices of copper,

nickel

and

zinc

changed monthly in 2014. In the very beginning, January, the float of

Nickel

's value was the most apparent, which is 6%.

However

, it kept decreasing in the following 5 months and hit the trough at -3 in June. Afterwards,

Nickel

's price experienced ups and downs, reaching a plateau at 1 in December. Copper and

Zinc

's selling prices changed much more smoothly than

Nickel

's, the relevant amounts in January were 2 and 1 respectively. Both the two metals underwent fluctuations in the whole year and floated around a level of 0.

Finally

,

Zinc

reached 2 and Copper was 1.5. During the entire year, only the % change of

Zinc

rose when compared with the original number. It is worth mentioning that the initial rank of the three metals became completely opposite in the end, with

Nickel

's changing percentage being the lowest.