As recently as 1990 nearly 70% of newspaper carriers in the U.S. were teens. But that number dropped to 18% in 2004 and more declines are likely. Although reasons for teens being edged out of this formerly youth-dominated profession are specific to the newspaper industry the end of the boyhood (or girlhood) paper route reflects a dramatic but little-noticed trend: Teen unemployment has hit historic highs in the last three years. Experts in the field say employers who want to ensure a quality workforce down the line should sit up and take notice.