The line chart illustrates the number of people who suffered from diarrhea disease in Mashhad from the year 1983 to 1992.
Overall, it can be seen that the majority of cases was in the year 1990. In addition, least amount of cases was in 1992.
Moving on to the more detail, number of the people who suffered from diarrhea in 1983 and 1984 was 100 respectively. Although, it rose slightly to almost 175 in 1986 and 200 in 1987. Moreover, after one year the number of cases fallen down dramatically to almost 75.
The further chart demonstrates that the cases of diarrhea skyrocketed in 1989 to 400 which was highest throughout the period. Thereafter, the numbers slowly declined to 350 in 1990 and remained stable till the year 1991. Subsequently, In 1992, cases decreased drastically and not a single person was affected to diarrhea.