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

of diarrhoea

cases

in the city of Mashhad from 1983 to 1992.

Overall

, the

number

of

cases

fluctuated in

this

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

cases

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

cases

in 1983, the

number

of diarrhoea

cases

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

Then

, 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

disease quadrupled to roughly 400 in early 1989.

Subsequently

in the next two years, the

number

of patients hovered around 400 and 350

cases

.

Finally

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

cases

in the middle of 1992.