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

The given line chart illustrates that between 1967 and 2007, the average release of carbon dioxide gas per head in four countries

such

as the United Kingdom, Italy, Portugal, and Sweden. Units are measured in

tonnes

. Looking from an

overall

perspective, it is readily apparent that the British people had the highest number of CO2 emissions in comparison to the other three countries. Both the United Kingdom and Sweden had a downward trend in the span of 40 years,

whereas

Portugal and Italy had slightly increased.

To begin

with, in the year 1966 to 1977, the gas emission was stable which was around 11 metric tons in the United Kingdom,

while

in Sweden, it increased by approximately 10

tonnes

to 10.5

tonnes

.

Conversely

, from 1977 to 2007, both countries dropped steadily, the UK dropped nearly 9

tonnes

, whilst the Swedish fell down sharply.

On the other hand

, in the span of 40 years, the carbon dioxide emission in Italy had increased from 1 metric ton to 7.5 metric tons,

whereas

Portugal had begun from 1 metric ton to 5.5

tonnes

.