The graph below shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007

The given chart illustrates how much average carbon dioxide (CO2) per person was discharged into the atmosphere in four European countries from 1967 to 2007.

Overall

, there was a significant increase in the amounts of CO2 emitted in Italy and Portugal,

while

those for the UK and Sweden saw a considerable decline.

In addition

, the figures for the UK consistently had the highest ones and those for Portugal were invariably the lowest throughout the period. At the beginning of the duration examined, every UK citizen gave off approximately 11 CO2 emissions in metric

tonnes

, followed by a steady tumble before ending at just under 9 metric

tonnes

in 2007. A resembling change, but to a greater extent, can be seen in the data on Sweden, which started at 9 metric

tonnes

in 1967 and experienced a sharp drop to nearly 5 metric

tonnes

after four decades.

Conversely

, the measure of Portugal was around 1 metric

tonnes

in 1967, after which it continuously grew to about 6 metric

tonnes

in the final year.

Similarly

, CO2 emissions transmitted by Italian residents was just over 4 metric

tonnes

in 1967, with rising to reach 9 metric

tonnes

in 2007.