The graph below shows average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007.

The given line graph depicts the amount of carbon dioxide released by each individual in the United Kingdom,

Sweden

, Italy and Portugal from 1967 to 2007 in

tonnes

.

Overall

, it can be seen that the line graphs related to the United Kingdom and

Sweden

have reduced during the mentioned years with the exception of a sharp rise in 1977

while

Italy and Portugal rose dramatically. With regard to England and

Sweden

, the graph illustrates that

,

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the amount of CO2 in the United Kingdom decreased gradually which started from nearly 11

tonnes

in 1967 to almost 9

tonnes

in 2007.

Besides

, in

Sweden

despite facing a sharp rise from under 9 to above 10 in only 10 years between 1967 and 1977, the rest of the chart for

this

country has reduced to 5.5

tonnes

in 2007. Turning to Italy and Portugal, despite marginal fluctuations, both of them have witnessed an overwhelming increase from 1 tonne in 1967 to 5.5 in 2007 for Portugal and from almost 4 to double

of

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it

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.