The line graph illustrates the average monthly change in the prices of three metals during 2014.
Overall, it can be clearly seen that the the price of Zinc slightly increased throughout the year, while the prices of Copper and Nickel dramatically decreased.
In detail, in January the price of Copper was 2%, then it steadily declined to 0.50% in March. After that, from March to June the price remained unchanged at 0.50%. However, in July it slighty rose to 1%. In contrast, in July the price of Cooper gradually rose to 1%, and then remained stable at 1% from July to August. Lastly, then reached to 1.50% in December. The price of Nickel was 6% in January, then it dramatically dropped to 1% in March. Similarly, in July it further decreased to -3% June. However, in July reached to -1%, after that remained stable at -1% from July to Septamber. Lastly, in December it significantly rose to 1%. Finally, the price of Zinc was 1% in January, then there was a slight increase of 2% in Feburary. After that, the price sharply decreased to -1% in June. From July to Septamber it remained constant at 0%, and then there was gradual rise of 4% in December.
