Frequencies for first 10,000 rows of pct0030016 variable in sf12010860us15 dataset :

  (400-999) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,091       80.91       80.91
          1 |        836        8.36       89.27
          2 |        347        3.47       92.74
          3 |        245        2.45       95.19
          4 |        156        1.56       96.75
          5 |         93        0.93       97.68
          6 |         68        0.68       98.36
          7 |         40        0.40       98.76
          8 |         36        0.36       99.12
          9 |         24        0.24       99.36
         10 |         22        0.22       99.58
         11 |          7        0.07       99.65
         12 |         16        0.16       99.81
         13 |          6        0.06       99.87
         14 |          4        0.04       99.91
         15 |          3        0.03       99.94
         17 |          1        0.01       99.95
         18 |          2        0.02       99.97
         19 |          1        0.01       99.98
         20 |          1        0.01       99.99
         30 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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