The graph illustrates the number of cases of X disease in the USA and the years between 1983 and 1992 and also the average numbers.
According to the data.we start from 1983 and 1984 the were the same number 100 cases,in the year 1985 there was a slight increase but the real rise started from 1986 and continued until 1987.In 1988 happened decline of about 100 , the big rise happened in 1989 it even reached 400 people infected with the disease this was due to the speed of spread .
But in 1990 and 1991 the number of infected people decreased to around 50,in last year 1991 a big dropped happened the disease disappears the number came 0
Overall the graph is about the disease, and how started at 100 in 1983. After that a big rise was in 1989 but in 1992 fell to 0 and the disease disappeared.
