Frequencies for per_no variable in pbtype dataset :

     person |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,756       92.05       92.05
          2 |        355        5.68       97.73
          3 |         79        1.26       98.99
          4 |         21        0.34       99.33
          5 |         10        0.16       99.49
          6 |          6        0.10       99.58
          7 |          5        0.08       99.66
          8 |          3        0.05       99.71
          9 |          3        0.05       99.76
         10 |          3        0.05       99.81
         11 |          2        0.03       99.84
         12 |          1        0.02       99.86
         13 |          1        0.02       99.87
         14 |          1        0.02       99.89
         15 |          1        0.02       99.90
         16 |          1        0.02       99.92
         17 |          1        0.02       99.94
         18 |          1        0.02       99.95
         19 |          1        0.02       99.97
         20 |          1        0.02       99.98
         21 |          1        0.02      100.00
------------+-----------------------------------
      Total |      6,253      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016