Frequencies for first 10,000 rows of pct0030022 variable in sf12010860us15 dataset :

  (400-999) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,723       97.23       97.23
          1 |        178        1.78       99.01
          2 |         42        0.42       99.43
          3 |         24        0.24       99.67
          4 |         20        0.20       99.87
          5 |          6        0.06       99.93
          6 |          6        0.06       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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