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

Person Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,394       53.94       53.94
          2 |      3,773       37.73       91.67
          3 |         39        0.39       92.06
          4 |          5        0.05       92.11
          5 |        679        6.79       98.90
          6 |         86        0.86       99.76
          7 |          4        0.04       99.80
          8 |          8        0.08       99.88
          9 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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