Real (inflation-adjusted) median household income in the US is about the same as in 1979. A recent study by the Pew Research Center noted that Americans earned 4% less income in 2014 than they did in 2000, and for the first time in more than 40 years, middle-class Americans no longer constitute a majority of the population.
看一看反映现状的令人触目惊心的统计数字。美国实际（经通胀调整的）中位家庭收入和1979年的水平大致相当。皮尤研究中心的最新研究指出，2014年美国人的收入比2000年少4%，并且40多年来第一次出现中产阶级不再占人口大部分的情况。