Frequencies for first 10,000 rows of pct012k143 variable in sf12010860us30 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,947       89.47       89.47
          1 |        783        7.83       97.30
          2 |        169        1.69       98.99
          3 |         47        0.47       99.46
          4 |         22        0.22       99.68
          5 |          8        0.08       99.76
          6 |         10        0.10       99.86
          7 |          1        0.01       99.87
         10 |          1        0.01       99.88
         15 |          1        0.01       99.89
         19 |          1        0.01       99.90
         21 |          1        0.01       99.91
         22 |          1        0.01       99.92
         33 |          1        0.01       99.93
         37 |          1        0.01       99.94
         41 |          1        0.01       99.95
         42 |          1        0.01       99.96
         50 |          1        0.01       99.97
         67 |          1        0.01       99.98
         85 |          1        0.01       99.99
         90 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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