The graph below shows average carbon dioxide emissions per person in the United kingdom, Sweden, Italy, and Portugal between 1967 and 2007.

The line chart illustrates the average carbon dioxide (CO2) emissions per person in four countries (UK, Sweden, Italy, and Portugal) between 1967 to 2007. The unit is measured in metric

tonnes

.

Overall

, during 1967-2007, the country that produced the highest CO2 emissions is the United Kingdom

while

Portugal produce the lowest CO2 emission is Portugal. Both

To begin

with, the United Kingdom produced approximately 11 metric

tonnes

of CO2 in the early years and

then

it progressively went down to around 9 metric

tonnes

in 2007. The downward trends

also

happened to Sweeden which produced just above 8 metric

tonnes

in 1967,

then

just went up and reach a peak of just above 10 metric

tonnes

in 1977 and

finally

periodically declined to just below 6 metric

tonnes

in the final year.

Conversely

, both Italy and Portugal have an inclined production of CO2 emissions during periods. In 1967, Italy and Portugal produce just above 4 and around 1 metric tonne respectively and

then

in the final

year

Add a comma

,year

show examples

It has increased to roughly 8 and just below 6 metric

tonnes

respectively.