The line graph illustrates information about how much carbon dioxide was emitted in 4 different countries from 1967 to 2007.
Overall, it is clear that emissions of carbon dioxide in the United Kingdom and Sweden decreased dramatically, while the other countries such as Italy and Portugal shows increase during the period.
In 1967, the average carbon dioxide emissions per person in the UK was 11 tonnes and it remained stable until 1977. However, the figure declined sharply to just over 8 tonnes at the end of the period. By contrast, the figure of Italy almost doubled, it stood at 4 tonnes and increased to just under 8 tonnes in 2007.
Moreover, in Portugal, which was the lowest, it remained the lowest, but it grew more than others. For instance, the figure begin at 1,5 and finished at 5 tonnes. However, the figure of Sweden stood at 8 tonnes, then it peaked at 10 tonnes in 1977. But, after this the figure dropped dramatically to 7 tonnes in 1987, then to 5 in 2007.
