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

     Person |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,124       61.24       61.24
          2 |      2,246       22.46       83.70
          3 |        872        8.72       92.42
          4 |        421        4.21       96.63
          5 |        171        1.71       98.34
          6 |         76        0.76       99.10
          7 |         37        0.37       99.47
          8 |         16        0.16       99.63
          9 |         10        0.10       99.73
         10 |          7        0.07       99.80
         11 |          5        0.05       99.85
         12 |          4        0.04       99.89
         13 |          3        0.03       99.92
         14 |          3        0.03       99.95
         15 |          2        0.02       99.97
         16 |          2        0.02       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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