Frequencies for first 10,000 rows of pct0030051 variable in sf12010860us15 dataset :

  (400-999) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,935       99.35       99.35
          1 |         49        0.49       99.84
          2 |          7        0.07       99.91
          3 |          6        0.06       99.97
          4 |          2        0.02       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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