The graph belowe shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007

The line chart provides information about the average carbon footprint emitted by one person in the

UK

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, Sweden, Italy and Portugal between 1967 and 2007.

Overall

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, there was an increase in the amount of CO2 emissions per resident in Italy and Portugal; meanwhile, these figures for the

UK

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and Sweden decreased in

this

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period.

In addition

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, despite the amount of CO2 emissions per citizen in the

UK

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steadily dropping throughout

this

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time frame examined, it was always the biggest one. At the commencement of the period, every Portuguese person induced around metric

tonnes

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of CO2, after which it rose dramatically to approximately 5 metric

tonnes

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in 1997 and climbed to 5.5 in the next decade. A resemblance change, but to a lesser extent, can be seen in the figure for Italy, starting at just above 4 metric

tonnes

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in 1967 and getting nearly 7.5 in the next 30 years before remaining stable in 2007. In 1967, per person who lived in the

UK

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emitted about 11.5 metric

tonnes

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of CO2,

then

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it gradually declined to 9 metric

tonnes

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in the

last

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year of the duration measured. The data seen in Sweden was 9.3 metric

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in 1967, after which it soared to 10.2 metric

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to reach its peak in 1997.

However

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, from

this

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year onwards, it experienced a significant drop to 5.5 metric

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, making it to become the smallest figure in 2007.