The presented line graph depicts, in metric tonnes, the average CO2 output per capita over a 40-year period, spanning between 1967 and 2007.
As is presented, it is apparent that both the UK and Sweden experienced downward trajectories, whereas the opposite was true for the other countries. It is also noteworthy that despite the UK showing a constant decline in released CO2, its residents emitted the highest amount of CO2 over the given period.
Turning to details, in 1967, the average emissions in the UK commenced at well above 10 metric tonnes per person, subsequently dropping to about 9 metric tonnes by 2007. Similarly, Sweden began with nearly 9 metric tonnes per capita in 1967, peaked at almost 11 metric tonnes in 1977, and then declined steadily to 5.5 metric tonnes by 2007.
On the contrary, there were steady climbs in CO2 emissions both in Italy and Portugal per during the specified time period. Italy’s emissions almost doubled from just above 4 metric tonnes in 1967 to nearly 8 metric tonnes in 2007. Nonetheless, residents in Portugal CO2 productions almost quadrupled, starting at almost 1.5 metric tonnes in 1967 and reaching roughly 5.5 metric tonnes in 2007, matching Sweden’s average.