The graph below shows average carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Summarise the information by selcting and reporting the main features.

The line graph shows the per capita

carbon

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dioxide

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pollution

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of Great Britain, Sweden, Italy and Portugal from 1967 to 2007. It is notable that emissions in the UK are notoriously high compared to other countries.

In contrast

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, Portugal's

pollution

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numbers are low, but the amount of

pollution

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is increasing year by year. In terms of the average of

carbon

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dioxide

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, Italy increased sharply, reaching 4.2 metric

tons

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in 1967, 6.2 metric

tons

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in 1977, 6.5 metric

tons

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in 1987, and nearly 8 metric

tons

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from 1997 to 2007, and

this

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level remained stable.

Then

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Portugal's

pollution

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numbers increased over the years.

In addition

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, the amount of

carbon

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dioxide

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between Portugal and Italy was stable at 2 metric

tons

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. In 1967, the United Kingdom was the most polluted, at about 11 metric

tons

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of

carbon

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dioxide

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, but emissions in the UK fell slightly year-on-year, to about 10.7 metric

tons

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in the first decade and 10 metric

tons

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. The second decade was the most polluted, with 9 metric

tons

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in 1997 and 8.5 metric

tons

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in 2007.