Frequencies for first 10,000 rows of pct012k069 variable in sf12010860us30 dataset :

   66 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,290       92.90       92.90
          1 |        583        5.83       98.73
          2 |         86        0.86       99.59
          3 |         18        0.18       99.77
          4 |          5        0.05       99.82
          5 |          3        0.03       99.85
          6 |          3        0.03       99.88
          7 |          1        0.01       99.89
          8 |          1        0.01       99.90
         10 |          3        0.03       99.93
         12 |          1        0.01       99.94
         14 |          2        0.02       99.96
         19 |          1        0.01       99.97
         20 |          1        0.01       99.98
         27 |          1        0.01       99.99
         43 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017