Frequencies for first 10,000 rows of age_grp variable in demo2016q4 dataset :

  Age Group |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,172       71.72       71.72
          A |      1,385       13.85       85.57
          C |        402        4.02       89.59
          E |        834        8.34       97.93
          I |         14        0.14       98.07
          N |         37        0.37       98.44
          T |        156        1.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Sep 2017