The line graph illustrates the rate of 
carbon
 Use synonyms
dioxide
 production per person in the United Kingdom, Sweden, Italy, and Portugal which were produced over 40 years from 1967 to 2007. Units are measured in metric Use synonyms
tonnes
.
Use synonyms
Overall
, the average of Linking Words
carbon
 Use synonyms
dioxide
 in the United Kingdom and Sweden declined over the period given, Use synonyms
while
 in Italy and Portugal, it climbed. Over the given duration the United Kingdom had the highest emission of Linking Words
carbon
 Use synonyms
dioxide
.
On the one hand, the amount of Use synonyms
carbon
 Use synonyms
dioxide
 emitted in the UK started at around 11 Use synonyms
tonnes
 and it slightly decreased to about 9 Use synonyms
tonnes
 in the Use synonyms
last
 year. Linking Words
Likewise
, in Sweden, it began at approximately 9 metric Linking Words
tonnes
 and Use synonyms
then
 peaked at about over 10 Linking Words
tonnes
 in 1977 before falling dramatically to almost 6 metric Use synonyms
tonnes
 in the final year.
Use synonyms
On the other hand
, in Italy, the production of CO2 increased from just above 4 to just below 8 metric Linking Words
tonnes
. Use synonyms
Similarly
, in Linking Words
Portugal
 it peaked at roughly 1 in 1967 and jumped to nearly 6 in 2007.Add a comma
Portugal,