The graph below shows the proportion of four different materials that were recycled from 1982 to 2010 in a particular country.

The given line chart illustrates the percentage of paper and cardboard, glass containers,

aluminum

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aluminium

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cans and plastics that were recycled between 1982 and 2010.

Overall

, we can see that paper and cardboard were the most recycled materials,

however

, after 1994

it

Correct pronoun usage

they

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experienced a decline

while

the other three categories increased over the period. In 1982, about 65% of paper and cardboard

was

Correct subject-verb agreement

were

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recycled.

This

figure fluctuated before rising steeply to reach a peak of 80% in 1994. From

then

on, it decreased steadily to a level of 70% in 2010.

On the contrary

, half of the glass containers were recycled in 1982; after

fell

Wrong verb form

falling

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down

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apply

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to 40% in 1990,

this

figure gradually rose to 60% by 2010. As for

aluminum

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aluminium

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, it only started to be recycled

from

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in

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1986, starting at just 5%, but

then

it climbed rapidly over the next 25 years and by 2010 it had reached 45%. The recycling of plastics,

instead

, was not introduced until 1990, and,

although

its growth was constant over the years, it was very slow, rising from about 2% to around 8%.