Chapter 10.1, Problem 26E

State prisoners. In $1980$ in the United States, $6\%$ of the inmates of state prisons were incarcerated for drug offenses. 30% for property crimes, $4\%$ for public order offenses, and $60\%$ for violent crimes; in $2014$ the percentages were $16\%,19\%,12\%$ and $53\%$ respectively. Present the data using two pie graphs. Discuss factors that may account for the shift in percentages between $1980$ and $2014$.