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

The line graph gives information about how each month's average expenditure on

three

different kinds of metals changed over the year 2014.

It is clear that

the total monthly spending on these

three

materials

overall

fell with the most dramatic decrease in the price of nickel

while

the two other ones had

even

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a steady rise. Over the first month, the prices of Nickle and

Copper

dropped by 2 and 1

percent

respectively

while

this

amount for Zinc experienced an increase of 2

percent

. Over the following

three

months, all

three

metals cost less until

finally

the price for

copper

levelled off in May

although

two others continued to fall. On the first of Jun, having dropped to its lower price, the figure for Nickle

then

rose by 2 per cent and remained until the first of September

where

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followed by a drop of 1 per cent. The same trend can be seen for Zinc and

Copper

staying stable from January to September. Over the

last

two months, all figures saw an increase of 3

percent

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for Zinc and nickel,

as well as

1

percent

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per cent

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for

Copper

.