The graph below shows average carbon dioxide (Co2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal between 1967 and 2007.

The line graph illustrates average carbon dioxide

emissions

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per person in the United Kingdom, Sweden, Italy, and Portugal, which were emitted during 40 years from 1967 to 2007. Units are measured in metric

tonnes

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.

Overall

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, average

emissions

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of carbon dioxide in the UK and Sweden went down gradually,

while

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for Italy and Portugal, they increased significantly.

Furthermore

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,

it is clear that

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the UK had the highest

emissions

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throughout. Regarding carbon dioxide indicators in the UK, it had

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at around 11 metric

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toward the beginning

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and

then

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decreased gradually to about 9 metric

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in 2007.

Likewise

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,

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in Sweden, the

emissions

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were approximately 8 metric

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in the first year and

then

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peaked at 10 metric

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in 1977 before falling dramatically to a low of 6 metric

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in the

last

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year.

On the other hand

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, Italy’s

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were at about 4 metric

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in the beginning,

however

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by the end of the period it rose to 8 metric

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.

Similarly

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, in Portugal, its CO2

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increased from less than 2 metric

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to around 5 metric

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at the end

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of the period.