The graph below illustrate mean emisions of carbon dioxide per person on the United Kingdom, Sweeden, Italy and Portugal from 1967 to 2007.
Overall, emissions in United kingdom are slowly decreased, also in Italy, it increased slowly but steady. When the discharge in Portugal is rose sharply, at the same time in Sweeden it grew a little bit then dropped.
In one clear trend, we saw the fall of releases of carbon dioxide in United Kingdom and Sweeden, but the comparision of them is that Sweeden grew untill 1977, and only then its declined significantly.
In contrast, the exhalations in Italy and Portugal are surged modaretely. In Italy it rose from about 4 to 7 tonnes with some pauses in 1977 and 1997, but Portugals emissions are jumpped unlike Italy.
To conclude, the effusion of carbon dioxide in United Kingdom and Sweeden is redused, while in Italy and Portugal it shooted up, aslo the emission in Sweeden and Portugal is the same amount.
