The information about carbon dioxide emissions by British, Swedish, Italians and Portuguese from 1967 to 2007 is illustrated by line graph. The data has been calibrated in metric tons.
Overall, the most striking fact emerging from the graph is that Italy and Portugal showed upward trend in average carbon emissions by per person whereas United Kingdom and Sweden depicted downward trend.
With regards to the average carbon dioxide releasing in United Kingdom, it began at around 11 metric tons and then declined at 10 metric tons in 1987, before falling steadily to nearby 8 metric tons in the last year. In Sweden, the figure fluctuated from approximately 8 metric tons to 6. 5 metric tons during 1967 and 1987, it constantly decreased and reached at low of 6 metric tons in 2007.
On the other hand, although the amount of carbon dioxide emissions per person in Italy was around metric tons in first year, it rose to 7 metric tons in middle years and stood at less than 8 metric tons from 1997 to 2007. The average emissions significantly increased in Portugal from 1 metric tons to 4 metric tons between 1967 and 1987. In the final years it touched near to 6 metric tons by rapid