Frequencies for first 10,000 rows of age_grp variable in demo2016q2 dataset :

  Age Group |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,091       70.91       70.91
          A |      1,644       16.44       87.35
          C |        257        2.57       89.92
          E |        837        8.37       98.29
          I |         12        0.12       98.41
          N |         21        0.21       98.62
          T |        138        1.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017