The chart below gives information on the average cost of a monthly plan from four different mobile phone providers in a European country, between January and September 2012, measured in euros.

The given line graph illustrates the average fee of monthly plans for cell phone constructors in a European nation in the first three quarters of 2002.

Overall

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, there was an increase in the figures for all providers except

provider

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C which experienced a decline in the given period. As can be seen,

provider

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A, there was a marginal rise from 15 to 2 in the amount of average cost monthly between Jan to May, after which it remained constant at 20 for one month. Over the next 2 months, it climbed to approximately 28. But it declined to just over 25

at the end

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of the period.

In addition

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, over the entire ,period the figure for

provider

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B increased by 5.

According to

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the data, between Jan and Jun, the figure for

provider

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C went up slightly from just under 10 to 14, over the next 3 months, it fell to 7. It is

also

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noteworthy to mention that, in the half first year the figure for

provider

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D saw the level out at 5 followed by the dramatic growth of 25 until Sep.