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

The line graph shows information about the difference in price

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month in percentages in terms of three metals in 2014.

Overall

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, all figures declined, with fluctuations,

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of the period.

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trends for copper and zinc dipped gradually, that for nickel decreased significantly. Regarding zinc, there was 1% difference with the previous month in January, and

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was followed by a sharp rise to 3 in February, where it reached its highest point. Despite a decline to -1 in July, the percentage increased to just below 0 in the next month.

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figure plateaued until September. After

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a dip to -1 in October, it experienced a sharp increase to 2 in December. Starting at 2 in January, the trend for copper witnessed a gradual reduction to 1 in July,

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it levelled off until September.

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figure fell off slowly to above 0 in November, before increasing moderately to 1.5. In terms of nickel, there was a 6 per cent change in cost in January, but

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was followed by a meltdown to -3 in June, where it hit its nadir, before a notable growth to 1 in December.