The graph shows the average carbon emissions per person in four countries between 1967 and 2007

The line graph illustrates the average carbon dioxide

emissions

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per person in 4 countries over a

period

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of forty years

from

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, from

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1967 to 2007.

Overall

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,

The

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the

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United Kingdom had the highest carbon

emissions

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,

while

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Portugal had the lowest

emissions

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at the beginning of the

period

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.

However

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, Italy and Portugal experienced significant growth by the end of the

period

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. In 1967, the United Kingdom recorded the highest carbon dioxide

emissions

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at almost 11 metric

tons

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, followed by Sweden at around 8.5

tons

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, Italy at approximately 4

tons

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, and Portugal at around 1.5

tons

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. Over the following years, the

emissions

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of Italy and Portugal increased sharply, and

this

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upward trend

was

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continued

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throughout the

period

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. In 1988, both Sweden and Italy had the same

emission

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emissions

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around 7 metric

tons

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, after which Italy continued to increase

and

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, and

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Sweden declined. Meanwhile, the United Kingdom peaked in 1977 before gradually decreasing

but

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, but

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remained the highest per capita by the end of the

period

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.