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

     Person |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,075       60.75       60.75
          2 |      2,256       22.56       83.31
          3 |        866        8.66       91.97
          4 |        423        4.23       96.20
          5 |        188        1.88       98.08
          6 |         87        0.87       98.95
          7 |         41        0.41       99.36
          8 |         25        0.25       99.61
          9 |         17        0.17       99.78
         10 |          9        0.09       99.87
         11 |          6        0.06       99.93
         12 |          2        0.02       99.95
         13 |          1        0.01       99.96
         14 |          1        0.01       99.97
         15 |          1        0.01       99.98
         16 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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