The given graph gives information about average carbon dioxide emissions per person in 4 countries United Kingdom,Sweden, Italy and Portugal in a 40-year period from1967 to2007.
It is clear that the CO2 emissions of United Kingdom and Sweden decreased. but also the CO2 emissions of Italy and Portugal increased.
Specifically, the emissions of Italy and Portugal kept increasing from 1967 to 2007, but there was a increasing first by Sweden's emissions from 1967 to 1977, after that, it kept decreasing, even more down than Portugal's emissions before 2007.
Although the emissions of United kingdom kept decreasing, but it still the country which the most CO2 emissions was.
