The graph below shows average carbon dioxide (Co2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal between 1967 and 2007. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The given data on average carbon dioxide emissions per person between 1967 and 2007 in the United Kingdom (UK), Sweden, Italy and Portugal are depicted in the line graph. At first glance, the averages of carbon dioxide emission showed not only downward but

also

upward trends. Descending trends were found in UK and Sweden. Meanwhile, Italy and Portugal had an upward tendency. To be particular, UK emissions started from more than 10 metric

tonnes

in 1967 and decreased gradually by about 2% in 2007.

Moreover

, the downward trend

also

can be seen in Sweden. The emission average began at about 8 metric

tonnes

in 1967,

then

increased by a fifth in 1977 and decreased to under 6 metric

tonnes

in 2007.

On the other hand

, both Italy's and Portugal's emissions improved. Italy was around 4 metric

tonnes

and sequentially rose approximately double

at the end

of the period.

Similarly

, Portugal had an emission average of just under 2 metric

tonnes

in 1967,

then

inclined progressively around threefold after 5 decades.