The graph below shows average carbon dioxide(CO2) emission 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 line chart above illustrates how much carbon dioxide (CO2) emissions were produced by one person within four decades in four countries.

Overall

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, the production of CO2 emissions by a person in the United

Kingdom

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and

Sweden

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experienced a decrease meanwhile CO2 emissions produced in both Italy and Portugal steadily increased. In the first two decades, the highest producer of individual CO2 was the United

Kingdom

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with its highest number of more than 10 metric

tonnes

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of CO2 per person followed by

Sweden

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people which produced eight metric

tonnes

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of CO2 in 1967 and

subsequently

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reached its peak with the above 10 metric

tonnes

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in 1977.

However

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, both the United

Kingdom

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and

Sweden

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people gradually reduced their production of CO2 until they reached their lowest points in 2007 with around eight metric

tonnes

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for the United

Kingdom

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and five metric

tonnes

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for

Sweden

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respectively.

In contrast

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, people in Italy and Portugal started their consumption of CO2 slowly in the first two decades with less than 2 metric

tonnes

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for Portugal and around 4 metric

tonnes

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for Italy.

Nonetheless

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, the CO2 produced by citizens in both countries steadily went up until it reached its highest point in 2007 in which Italy was able to reach almost eight metric

tonnes

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and Portugal managed to catch up with

Sweden

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's latest production of CO2 with around five metric

tonnes

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.