The single line chart given provides us the information of the data that measures the percent of the people that got disease in the time period of time frame 1960 until 1995 in someland.
Overall, after analyzing the provided data we can see the an important data to observe , and they are in the following points
First of all ,the number of sick people was 100 in someland in the first year in the measured period and it was 1960.In 1965, the number didn’t change at all ,so it was (100)people in the city. In the next measured year (1970) the number has got improved slightly , so it was improved from (100) in the year before to(200) to the year after. If we talked about 1975, so the number of the sick people had a massive change, because it was the biggest improve from (200) one to (500) one. After five years (1980) the number was in a resting state because the number didn’t change at all. In the next measured period, it was observed that there is a tromandus downgrade in the number of the patient so there wasn’t any patient for this disease in someland. At the last year, we didn’t see any changes to have ni illness in the someland city.
To sum up with, after observing for the displayed data,the peak of the illness was in 1975 and 1980. Also to say, the least years in the graph was in the last two years (1985) and (1990).