The percentages of four recycled materials, namely paper, glass, aluminium and plastic

the proportion of four different materials that were recycled

The graph depicts the percentages of four recycled materials, namely paper, glass, aluminium and plastic, in a country between 1982 and 2010. Overall, it can be seen that paper and glass were recycled the most, but the rate of recycling rose steadily during the period. Whereas aluminium cans' recycling increased considerably, recycled plastic was almost same and the lowest of all.

Paper and cardboard's recycling started with about 65% in 1982, which, after some fluctuations, grew slowly to 80% in 1994. Thereafter, a continuous drop was seen in the paper recycled, at almost 2% in every four years. Meanwhile, half (50%) of the total glass containers produced were being cycled in 1982. Although this recycling hit a low of 40% in 1990, the proportion of recycled glass grew gradually to 60% during 1990-2010.

In context to aluminium cans, the recycling process began at just 5% in 1986, but it went up noticeably high at nearly 45% in 2010. The growth rate was about 5% every four years until 2002 and 10% for the subsequent period. Plastics, however, witnessed a minimal rise of only around 7% over the 20-year period starting from 1990 [it was approximately 2% and 9% in 1990 and 2010, respectively].

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An apostrophe is not used to indicate the plural form of words such as cans, bottles, shorts, pens, etc. A change in spelling, rather than a punctuation mark is used to indicate the plural form of words. The apostrophe is used to indicate a contraction of words or as a possession indicator. It is not used to deliver the plural form of a word due to the confusion that such a reference produces. Apostrophes are not used to indicate the plural form of any word in proper and formal English writing. This is a repeated error in this presentation that shows a serious unfamiliarity with English writing principles and rules. This is a common mistake made by ESL writers and is also one of the most common reasons for lower or failing grammar scores.

There are lots of grammar mistakes in your essay
I can barely understand your essay at some point because it is confusing for me
And the way you use , is probably wrong and unsuitable
Even though i am not good at english but i can sure what i said is true