Frequencies for first 10,000 rows of a_age1 variable in per_aux dataset :

AGE Group 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,080       10.80       10.80
          2 |      3,104       31.04       41.84
          3 |      3,950       39.50       81.34
          4 |      1,391       13.91       95.25
          5 |        475        4.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016