The line graph below shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007.  Summaries the information by selecting and reporting the main features, and make comparisons where relevant.   
The line graph compares the outflow of carbon dioxide in four countries in decades from 1967 to 2007. It is measured in metric tonnes.
Overall, it is clear that Portugal and Italy were increased while United Kingdom and Sweden was decreased over a period shown.
In 1967, Italy and Portugal were stood at just above four and just below two tonnes respectively. Then, Italy increased sharply and reached at just over six in 1977, whilst Portugal increased steadily and reached at in between two and four metric tonnes, in 1987. Before remained static at the end of the period with just under eight, Italy rose gradually till 1997. After increased steadily from 1987 to 1997, Portugal increased minimally and reached at just below six tonnes.
In 1967, United Kingdom and Sweden were stood at marginally above eight and ten metric tonnes respectively. Before decreased dramatically, Sweden increased sharply, and reached at peak in 1977, around ten metric tonnes. Then, in 1987, it decreased steadily again and got equal to Italy by the end of the period at around six. However, United Kingdom decreased steadily over a period. 
The line graph compares the outflow of carbon dioxide in four countries in decades from 1967 to 2007. It  
is measured
 in metric tonnes. 
Overall
, it is  
clear
 that Portugal and Italy were  
increased
  while United Kingdom
 and Sweden was  
decreased
 over a  
period
 shown.
In 1967, Italy and Portugal  
were stood
 at  
just
 above four and  
just
 below two tonnes  
respectively
. Then, Italy  
increased
  sharply
 and  
reached
 at  
just
 over six in 1977, whilst Portugal  
increased
  steadily
 and  
reached
 at in between two and four metric tonnes, in 1987.  
Before
 remained static at the  
end
 of the  
period
 with  
just
 under eight, Italy rose  
gradually
 till 1997. After  
increased
  steadily
 from 1987 to 1997, Portugal  
increased
  minimally
 and  
reached
 at  
just
 below six tonnes.
In 1967, United Kingdom and Sweden  
were stood
 at  
marginally
 above eight and ten metric tonnes  
respectively
.  
Before
  decreased
  dramatically
, Sweden  
increased
  sharply
, and  
reached
 at peak in 1977, around ten metric tonnes. Then, in 1987, it  
decreased
  steadily
 again and  
got
 equal to Italy by the  
end
 of the  
period
 at around six.  
However
, United Kingdom  
decreased
  steadily
 over a  
period
.