this. here's the graph which clearly labels it as aggregate income. http://www.pewsocialtrends.org/files/2015/12/ST_2015-12-09_middle-class-01.png http://www.pe

this. here's the graph which clearly labels it as aggregate income. http://www.pewsocialtrends.org/files/2015/12/ST_2015-12-09_middle-class-01.png http://www.pewsocialtrends.org/files/2015/12/ST_2015-12-09_m...