The graph below shows average carbon dioxide (Co2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal between 1967 and 2007

The line graph depicts the CO2 emission in several countries which were surveyed in metric tonnes from 1967 to 2007 decennially.

Overall

, all of the numbers indicate positive trends,

whereas

only cases in the United Kingdom and Sweden dropped continuously. In detail, in 1967, the emission of CO2 in Italy revealed 4

tons

.

This

trend

was

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rose dramatically to approximately 6

tons

in 1977, and continue to shoot up until below 8

tons

in 2007.

This

pattern

followed

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was followed

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with

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by

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Portugal which had a sharp shot up from approximately 1

tons

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ton

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to below 6

tons

in 2007.

On the other hand

, the number of

emission

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emissions

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per person in Sweden experienced a gradual rise from approximately 9

tons

to above 10

tons

. Surprisingly,

this

trend did not

last

long

,

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and began to decline in the following year, which indicated 7

tons

in 1987, and below 6

tons

in the

last

period. The United Kingdom

also

experienced the same situation, which showed 11

tons

in the first year,

then

experienced to fall until approximately 9

tons

.