The graph illustrates the number of cases of X disease in Someland between 1960 and 1995.
Overall, there is a significant growth of cases from 1965 to 1980. But, the number is gradually decreasing after 1980 and reached the minimum level until the end. However, the case reached its maximum level between 1975 and 1980.
During 1960 and 1965, sufferers were of equal amount, which was 100. As time passed, the patients suffering from this disease started rising and reached 200 in 1970. Gradually, the number of cases increased and reached its maximum level in 1975, which was recorded to be 500. It remained the same for 5 years.
On the other hand, the spreading of the disease slightly started falling, and in 1980 it decreased between 400 and 300. Finally, Someland was free of X disease in 1990. Subsequently, in 1995, too, no cases were found. In conclusion, the disease ended at its peak level between 1975 and 1980 and again reached its minimum from 1990 to 1995.
