Frequencies for first 10,000 rows of pct0030014 variable in sf12010880us15 dataset :

  (400-999) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,437       94.37       94.37
          1 |        326        3.26       97.63
          2 |        106        1.06       98.69
          3 |         76        0.76       99.45
          4 |         17        0.17       99.62
          5 |         19        0.19       99.81
          6 |          6        0.06       99.87
          7 |          7        0.07       99.94
          8 |          2        0.02       99.96
          9 |          2        0.02       99.98
         10 |          1        0.01       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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