The line graph depicts the average carbon dioxide (CO2) emissions in metric 
tonnes
 per individual human being in the United Use synonyms
Kingdom
, Use synonyms
Sweden
, Italy and Portugal from 1967 to 2007.
The average CO2 gas discharge in Portugal and Italy had a significant rise over the period of time, Use synonyms
while
 the United Linking Words
Kingdom
 and Use synonyms
Sweden
 had shrunk by the Use synonyms
year
 2007.
In the Use synonyms
year
 1997, Italy and Portugal had 4 and 1 metric Use synonyms
tonnes
 of carbon dioxide emissions respectively. Italy experienced a significant rise between 1967-1997 and it attained about 8 metric Use synonyms
tonnes
 and Use synonyms
then
 remained steady till the deadline of the period, Linking Words
whereas
 Portugal had an upsurge from the beginning to the end and reached near to 6 Linking Words
tonnes
. 
Use synonyms
However
, the United Linking Words
Kingdom
 and Use synonyms
Sweden
 had 11 and 9 metric Use synonyms
tonnes
 emissions respectively. The United Use synonyms
Kingdom
's Co2 gas release drastically decreased to 9 metric Use synonyms
tonnes
 but ,still Use synonyms
at the end
 of the time it had the highest gas emission Linking Words
while
 Linking Words
Sweden
 had an upsurge during the Use synonyms
year
 1967-1977 it had made approximately 11 metric Use synonyms
tonnes
 and from the Use synonyms
year
 1977-2007 it has sharply fallen to 5 metric Use synonyms
tonnes
. By the end of the Use synonyms
,
period Remove the comma
apply
Sweden
 has less carbon dioxide emission per person.Use synonyms