An average account of carbon di-oxide emission from four countries, divided per person between 1967 and 2007 is illustrated in the given line graph.

Overall, it is clear that, when the emission rates went down in the UK and Sweden, an opposite trend is observed in the other countries.

It is obvious from the chart that the typical emission per person in 1967 was the highest in the UK, with around 11 metric tonnes. This was more than two metric tonnes, when compared to the emission from a Swede.

The proportion of CO2 emissions was lower in Italy and Portugal this year. An Italian citizen emitted over 4 metric tonnes CO2, whereas in the latter country, it was just over a metric tonne.

In all the countries except the UK, the per capita emission climbed in the next decade. Sweden was the country in which this was the worst, when an average citizen emitted over 10 metric tonnes of CO2.

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