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

The given line graph reveals the tonnages of

carbon

dioxide

emission

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emissions

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in four European countries from 1967 to 2007.

Overall

, the dominant country for

carbon

emissions throughout the period was the United Kingdom, the UK and Sweden showed a downward trend

besides

their counterparts. In 1967, the CO2

emission

weight of

UK

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the UK

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was roughly 11

tonnes

before

this

declined slightly to around 9

tonnes

in 2007. From 1967 to 1977, Sweeden's

carbon

emission

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emissions

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increased moderately and reached a peak at just over 10

tonnes

,

then

this

amounth

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amount

amounts

declined exponentially over the period of 30 years. Italy and Portugal were countries

that

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where

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their

carbon

emissions rose consistently between 1967 and 2007. Italy's

carbon

emission

started at about 4

tonnes

in 1967, after 30 years,

this

increased by 3,5

tonnes

per year in 1977 and protect its position at

rougly

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roughly

8

tonnes

per year a decade later.

In contrast

, Portugal's

carbon

emission

inclined sharply to 5

tonnes

in 1997 and grew slowly between 1997 and 2007.