The graph below shows average carbon dioxide (Co2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal between 1967 and 2007. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The given data on average carbon dioxide emissions per person between 1967 and 2007 in the United Kingdom (UK), Sweden, Italy and Portugal are depicted in the line graph. At first glance, the averages of carbon dioxide emission showed not only downward but

also

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upward trends. Descending trends were found in UK and Sweden. Meanwhile, Italy and Portugal had an upward tendency. To be particular, UK emissions started from more than 10 metric

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in 1967 and decreased gradually by about 2% in 2007.

Moreover

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, the downward trend

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can be seen in Sweden. The emission average began at about 8 metric

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in 1967,

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increased by a fifth in 1977 and decreased to under 6 metric

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in 2007.

On the other hand

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, both Italy's and Portugal's emissions improved. Italy was around 4 metric

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and sequentially rose approximately double

at the end

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of the period.

Similarly

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, Portugal had an emission average of just under 2 metric

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in 1967,

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inclined progressively around threefold after 5 decades.