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

The graph gives a breakdown of the percentages of monthly changes in the price of copper, nickel and zinc metal in 2014.

Overall

, nickel experienced a sharp decrease,

while

the changes in copper metal were a minimal rise and zinc metal witnessed a negligible fall. In the first month (January), nickel had the highest price at 6% and it had experienced a sharp decline at -3% by June. The figure saw an increase of 2% in the next month,

then

it had some fluctuation, reaching 1% by the end of

this

year. In January, the price of zinc metal was 1 %,

then

it rose noticeably to 3%. The figure was followed by a sharp decrease -1% by July,

while

the rate had experienced some changes, reaching 2% in December. Copper experienced 1% in January. The figure had decreased below 1% two months later

while

it had fluctuated

by

Change preposition

in

show examples

the

last

month and

finally

, it rose above 1%.