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 provides information regarding the average carbon dioxide emissions in metric

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per person in four countries— the United Kingdom,

Sweden

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, Italy and Portugal— from 1967 to 2007.

Overall

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, it can be seen that there were upward trends in carbon dioxide emissions of Italy and Portugal,

while

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the release of the UK and

Sweden

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saw downward trends. Despite experiencing a decline, the UK still be the country which emitted the most quantities of carbon dioxide over the period. Looking at the details, the UK started at over 10

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in 1967,

then

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it remained stable for 10 years, and after that, the figure continued to decrease steadily until it finished at over 8

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in 2007.

Sweden

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witnessed a sharp rise at

first,

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but

this

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was followed by a considerable fall to nearly 6

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at the end

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.

On the contrary

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, Italy and Portugal

,

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shared similar trends: the emissions started at approximately 4

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and just under 2

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, after which they grew significantly to around 8

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and 5

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in 1997 respectively.

Next,

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although

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the figure for Italy stayed stable to the end, that of Portugal slightly increased and finished at the same figure as

Sweden

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.