The chart illustrates the proportion of three metal prices every month compared with previous month during 2014.
Overall, all of them experienced fluctuating trends. Although Nickle constituted the largest price in January, it declined to lowest figure in December.
Nickle presented the highest proportion in the chart at 6% in January, before a significant decrease to 1% in march. Copper showed at 2% in January. It then declined to less than 1% in March. Both of them remained unchanged until April. After that, they decreased slightly to under 1% and 0% respectively. Copper remained stable, while Nickle decreased dramatically to -3% in June. Nickle and Copper then rose to -1% and 1% respectively in July, before being unchanged until September. Both of them experienced a slight decrease to -2% and less than 1% in October. Copper remained stable in November and then fell to more than 1%, while Nickel increased dramatically at 1% and then remained unchanged until December.
Zinc followed a different pattern. It was 1% in January before a significant increase in February at 3%. Then, it decreased dramatically to -1% in June. In October, it again experienced 2% before a slight increase and decrease. At the end, it rose and constituted the largest proportion in December at 2%.