"A line graph displays three trend lines with an x-axis ranging from 1978 to 2014 in two year increments and a y-axis ranging from 0 to 2,000,000 in increments of 500,000. One line marked ""Private prisons"" shows very slow increase over time, ending at its highest point at 131,261. A line labeled ""government run prisons"" gradually increases and ends at the high number 1,430,264. The final line, labeled ""all state and federal prisons"" is the highest of all the lines and ends above the other two at 1,561,525."
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