Frequencies for first 10,000 rows of age_grp variable in demo2017q3 dataset :

  Age Group |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,548       75.48       75.48
          A |      1,407       14.07       89.55
          C |        170        1.70       91.25
          E |        730        7.30       98.55
          I |         21        0.21       98.76
          N |         26        0.26       99.02
          T |         98        0.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Feb 2018