Frequencies for first 10,000 rows of per_no variable in miper dataset :

   PERSON # |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,877       98.77       98.77
          2 |         90        0.90       99.67
          3 |         22        0.22       99.89
          4 |          6        0.06       99.95
          5 |          4        0.04       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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