The line graph illustrates the average monthly changes in the prices of copper, nickel, and zinc throughout the year 2014.
Overall, it can be seen that all three metals experienced a significant decline in their prices during the first half of the year, remained steady in the third quarter, and then saw a gradual recovery in the final quarter.
Regarding the first half of the year, nickel prices experienced the most striking decrease, falling from 6% to -3%. Meanwhile, the price of copper declined at a relatively gentle rate, dropping from 2% to around -0.5%. Additionally, zinc prices also experienced a gradual decrease, falling from 1% to -1%.
As for the remaining period, the price trends of the three metals were similar. They remained steady in the third quarter, then followed by a recovery. Specifically, nickel price recovered from -3% to 1%, zinc’s from -1% to 2 %, and -0.5% to 1.5% in copper’s.