The graph below shows average carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Summarise the information by selcting and reporting the main features.

The line graph shows the per capita

carbon

dioxide

pollution

of Great Britain, Sweden, Italy and Portugal from 1967 to 2007. It is notable that emissions in the UK are notoriously high compared to other countries.

In contrast

, Portugal's

pollution

numbers are low, but the amount of

pollution

is increasing year by year. In terms of the average of

carbon

dioxide

, Italy increased sharply, reaching 4.2 metric

tons

in 1967, 6.2 metric

tons

in 1977, 6.5 metric

tons

in 1987, and nearly 8 metric

tons

from 1997 to 2007, and

this

level remained stable.

Then

Portugal's

pollution

numbers increased over the years.

In addition

, the amount of

carbon

dioxide

between Portugal and Italy was stable at 2 metric

tons

. In 1967, the United Kingdom was the most polluted, at about 11 metric

tons

of

carbon

dioxide

, but emissions in the UK fell slightly year-on-year, to about 10.7 metric

tons

in the first decade and 10 metric

tons

. The second decade was the most polluted, with 9 metric

tons

in 1997 and 8.5 metric

tons

in 2007.