The graph below gives information about the number of cases of diarrhea in Mashhad between 1983 and 1992. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line graph provides information on the

number

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of diarrhoea

cases

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in the city of Mashhad from 1983 to 1992.

Overall

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, the

number

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of

cases

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fluctuated in

this

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period reaching the highest point in 1989 and later plummeting to register zero

cases

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of patients in 1992. Starting off with a little over 100

cases

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in 1983, the

number

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of diarrhoea

cases

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climbed consistently over the period of half a decade to hit 200 in 1987.

Then

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, a steep decrease was registered for a year sitting at approximately 100 in 1988 meaning that it was returned to the previous rate. The highest increase was experienced a year later when patients of

this

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disease quadrupled to roughly 400 in early 1989.

Subsequently

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in the next two years, the

number

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of patients hovered around 400 and 350

cases

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.

Finally

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, in late 1991 figures undertook a precipitous cut in patient rates reaching zero

cases

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in the middle of 1992.