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

   PERSON # |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,900       99.00       99.00
          2 |         70        0.70       99.70
          3 |         14        0.14       99.84
          4 |          4        0.04       99.88
          5 |          4        0.04       99.92
          6 |          3        0.03       99.95
          7 |          2        0.02       99.97
          8 |          2        0.02       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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