The graph below shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The given line graph illustrates the number of carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal over a period of 40 years from 1967 to 2007. Units are measured in metric tonnes.

Overall

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, it can be clearly seen that the two

countries

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with the highest level at the start decreased,

whereas

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the other two

countries

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increased.

Moreover

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,

while

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the amount of carbon dioxide in the United Kingdom and Sweden was the highest at the start, it had been overtaken by Italy and Portugal by the end of the period. In terms of the

countries

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with high levels in the beginning, the United Kingdom was the highest, standing at around 10.5% in 1967. But,

this

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figure fell moderately to approximately 8.5% in the final year.

Likewise

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, Sweden stood at around 8.5% at the start, but it reached a peak of just above 10% in 1977. From

this

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point onwards, it witnessed a significant fall of around 5.5% in 2007. Regarding the other two

countries

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with lower levels, the amount of carbon dioxide in Italy started at just above 4%.

Then

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, it rose moderately to just below 8% in 1997 and levelled off until the final year.

Similarly

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, Portugal was the lowest, starting at around 1% in 1967. But, it experienced a significant growth of around 5% and remained steady in 2007.