Summarize the information by selecting and reporting the main features and make comparisons wherever relevant. Write at least 150 words.

The line graph gives information about the average number of carbon dioxide (CO2) emissions per person in the United Kingdom,

Sweden

, Italy, and Portugal from 1967 to 2007. Overall, the emission averages of Italy and Portugal showed an upward trend over time, while the numbers of CO2 waste in the UK and

Sweden

experienced a downward trend with some fluctuation modes in

Sweden

. At

first

, the CO2 numbers in Italy and Portugal were nearly 4 and 1 respectively in 1967. Portugal’s number increased significantly over the years, reaching about 5 in 1997 and remaining the same until the end of the stage. In the meantime, the discharge in Italy experienced remarkable growth to around 6 in 1977,

then

this

number gradually rose to almost 8 in 1997, followed by stagnation for the

next

decade.

In contrast

, the discharge rate of the UK in 1967 accounted for approximately 11, outracing these four countries,

then

it declined moderately to around 9 in 2007. In the same period, there was an escalation of CO2 emissions in

Sweden

from about 9 in 1967 to around 10 in 1977.

However

, it showed a dramatic fall to about 7 in 1987 and finished at around 5 in 2017, which was the lowest discharge.