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

   PERSON # |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,881       98.81       98.81
          2 |         90        0.90       99.71
          3 |         20        0.20       99.91
          4 |          6        0.06       99.97
          5 |          1        0.01       99.98
          6 |          1        0.01       99.99
         27 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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