Create the Annotate data set, BARLABEL. The MIDPOINT variable uses the values of the chart variable CITY to provide the X coordinate for the subgroup labels. The SUBGROUP variable uses the values of the variable TYPE to provide the Y coordinate that vertically positions the labels in the bar. Because no function is specified, the data set uses the default function, LABEL. The POSITION value E places the labels just below the top of each subgroup bar.

data barlabel;
   length color style $ 8;
   retain color "white" when "a" style "arial"
      xsys ysys "2" position "E" size 4 hsys "3";
   set sold;
   midpoint=city;
   subgroup=type;
   text=left(put(units,5.));
run;