Frequencies for per_no variable in person dataset :

   PERSON # |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        804       74.65       74.65
          2 |        173       16.06       90.71
          3 |         61        5.66       96.38
          4 |         25        2.32       98.70
          5 |          9        0.84       99.54
          6 |          4        0.37       99.91
          7 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,077      100.00

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