The graph below gives information about the progress of certain diseases during childhood between 1950 and 2000 in a developing country

The graph shows the number of certain diseases during childhood between 1950 and 2000 in one country.
There are four types of illnesses including AIDS, malaria,smallpox and tuberculosis. We can see that the high number of all diseases was in 1950 and the smallest index was in 1980.The highest number of tuberculosis was in 1950, which was 700. The smallest number was in 1980, it was under 200. In 2000 the number of people, who was ill by AIDS, was about 500. People was not ill by AIDS from 1950 to 1970.Also,there was not a smallpox from 1980 to 2000. The smallest index of malaria was in 1960 and the highest number was in 1980, there were nearly 300 patients.
Overall, it is clear that the highest number of all diseases was in 1950. In 1980 the number of all kinds of illness was smaller than other years.