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

What has been depicted in the line graph is the change in average carbon

emissions

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each person in four different countries from 1967 to 2007.

Overall

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, CO2

emissions

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in the UK and

Sweden

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ranked

first

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for the

first

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decade, though the latter saw a dramatic decrease and came in third place in the end.

Additionally

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, per-capita carbon

emissions

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in Italy and Portugal followed an upward trend over the given period. At

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first

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, CO2

emissions

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in the United Kingdom started at around 11 metric

tonnes

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, after which it experienced a slight drop and reached the initial value of

Sweden

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in 2007. After declining from 10 in 1977 to nearly 7 metric

tonnes

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in 2007, average CO2 emission in

Sweden

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saw a moderate increase over the

first

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decade. In the beginning, the amount of CO2

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in Italy began at 4 metric

tonnes

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and rose slightly until 1997, when it overtook

Sweden

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and continued increasingly (8 metric

tonnes

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) the next 30 years.

Moreover

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, the figure for Portugal

initially

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rose gradually from 1 to around 5 metric

tonnes

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in 1997

,

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and

then

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remained unchanged for the rest of the year.