The line graph compares the average carbon dioxide (CO2) emissions released per person in four distinct countries from 1967 to 2007.
Overall, there was a significant increase in carbon dioxide emissions in both Italy and Portugal. In contrast, the UK and Sweden had the highest rates of emissions initially, but these rates declined significantly throughout the period. Despite this decline, the UK remained the largest contributor to carbon dioxide emissions.
Specifically, the UK had the highest average CO2 emissions per person, starting at around 11 metric tonnes in 1967. However, this figure gradually declined to just over 8 metric tonnes by 2007. Sweden initially recorded about 8 metric tonnes of CO2, which rose to just over 10 metric tonnes in 1977 before dramatically decreasing to just under 6 metric tonnes by the end of 2007.
In contrast, Portugal began with negligible CO2 emissions, while Italy’s emissions started at around 4 metric tonnes and rose to approximately 8 metric tonnes. By 2007, Portugal’s emissions reached just under 6 metric tonnes, up from less than 2 metric tonnes in 1967.