Frequencies for first 10,000 rows of pct0030031 variable in sf12010880us15 dataset :

  (400-999) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,409       94.09       94.09
          1 |        344        3.44       97.53
          2 |        119        1.19       98.72
          3 |         68        0.68       99.40
          4 |         30        0.30       99.70
          5 |         19        0.19       99.89
          6 |          4        0.04       99.93
          7 |          4        0.04       99.97
          8 |          1        0.01       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017