The graph below shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007.

The chart compares the ordinary amount of carbon dioxide emission per person during a 40-year interval in four different regions including the

UK

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,

Sweden

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, Italy and Portugal.

Overall

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, it is explicit that the

UK

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and

Sweden

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followed a downward trend within the period;

although

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, the statistics

of

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for

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Italy and Portugal have increased in comparison with the initial phase. Focusing on the

UK

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and

Sweden

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, what stands out from the scheme is that the data of both of them declined;

however

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, the former started to

declined

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decline

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steadily and the latter followed a series of

fluctuation

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. In more detail, the

UK

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had the greatest details at

first,

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roughly

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with roughly

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11 CO2 emissions in metric tonnes, but it reached approximately 9

at the end

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.

Moreover

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,

Sweden

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ranked second; but subsequent to a peak of 10.5, it dropped suddenly to less than 6 in 2007. Regarding Italy and Portugal, it can be seen that

whereas

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they had the third and fourth positions in 1967, with the information of a bit more than four and less than two respectively; they started to grow gradually to be accounted for nearly 8 and 5.5 in 2007 separately.