Since the 1970’s, wages for workers at the 90th percentile of the wage distribution in the US –such as office managers – have grown much faster than wages for the median worker (at the 50th percentile), such as factory workers and office assistants. A number of factors are responsible for the growth in the 90/50 differential.
自上世纪70年代以来，美国工资分配群体中，90%的办公室经理比50%的普通工人和办公室职员的工资增长速度快得多。这就拉大了收入的差距。