Answer
Year 1: 48 billion dollars
Year 2: 52 billion dollars
Year 3: 60 billion dollars
Year 4: 63 billion dollars
Work Step by Step
Referring to the graph, find Year 1, 2, 3 and 4 on the x-axis and trace the line upwards until you meet the point to find the corresponding annual revenue for each year.
When you meet the point, estimate the value of the y-axis or the annual revenue axis to find the estimate of annual revenue for each year.