Frequencies for first 10,000 rows of pct012k044 variable in sf12010860us30 dataset :

   41 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,785       87.85       87.85
          1 |        899        8.99       96.84
          2 |        194        1.94       98.78
          3 |         66        0.66       99.44
          4 |         19        0.19       99.63
          5 |         10        0.10       99.73
          6 |          8        0.08       99.81
          7 |          1        0.01       99.82
          8 |          2        0.02       99.84
          9 |          3        0.03       99.87
         10 |          1        0.01       99.88
         12 |          1        0.01       99.89
         17 |          1        0.01       99.90
         19 |          1        0.01       99.91
         21 |          1        0.01       99.92
         22 |          1        0.01       99.93
         25 |          1        0.01       99.94
         26 |          1        0.01       99.95
         27 |          1        0.01       99.96
         44 |          1        0.01       99.97
         46 |          1        0.01       99.98
         52 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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