The graph below shows the population figures of different types of turtles in India between 1980 and 2012. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line graph displays the variety of turtle populations in India from 1980 to 2012.

Overall

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, the general trend for all turtle populations decreased over the time period, the only exception was the Olive Ridley

Turtles

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, which showed a dramatic increase entire period. Another significant feature of

this

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line graph is the

index

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, which starts from 100 for all varieties

although

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their quantities did not vary with each other. During the entire time period, from 1980 to 2012, the

index

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for the Olive Ridley

Turtles

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rapidly increased from 100 to around 130 respectively. Despite some fluctuations, the

index

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of all species was relatively the same in the 19th and 20th centuries with a total count of 111. The biggest variation could be seen in Green

Turtles

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, with the lowest

index

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around 82 in 2001 and the highest was 100 in the starting time. The Leatherback

Turtles

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were 19 in total figure and

according to

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the

index

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, these were 100 in the starting phase. The biggest

index

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for these was above 115 in 1987 and

then

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started to continue to fall down till 2012 at below 60, which was the lowest among other

turtles

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.