The graph below shows the average monthly change in the prices of three metals during 2014.

the line graph illustrates the percentage change in

price

growth or loss per month in terms of 3 metals: zinc , nickel and copper throughout 2014.

overall

, it can be early seen that the ratios of nickel greatest decrease, it begins with the highest ratios but declined to the lowest growth

at the end

. Meanwhile, zinc and copper have little change.

To begin

, nickel's

price

started in January at 6% before decreasing by 5% after 2 months. After that, it had a 0,5% decrease in

price

in May before it declined gradually to -3% growth .

However

, its percentage rose again in July and stabilized at -1% in September.

Moreover

, its

price

decreased by 1% in October before it climbed to 1% in the final month.

furthermore

, the

price

of zinc was 1% in January.

This

cost

then

jumped to 3% in February before it was a 1% decrease in

price

in June.

Subsequently

, it showed a slight change from -1% to 0,5% in October.After that , it increased gradually to 2% in the end. Turning to copper, its percentage of

price

started to just 2% before it decreased to nearly -0,5% in June . What's more, it climbed to 1% before it changed slightly in October.

At the end

of the period, it rose again to approximately 1,5%.