Frequencies for first 10,000 rows of pct012n003 variable in sf12010860us33 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,559       85.59       85.59
          1 |        844        8.44       94.03
          2 |        305        3.05       97.08
          3 |        128        1.28       98.36
          4 |         65        0.65       99.01
          5 |         30        0.30       99.31
          6 |         13        0.13       99.44
          7 |         12        0.12       99.56
          8 |         13        0.13       99.69
          9 |          5        0.05       99.74
         10 |          4        0.04       99.78
         11 |          2        0.02       99.80
         12 |          3        0.03       99.83
         13 |          5        0.05       99.88
         16 |          2        0.02       99.90
         18 |          2        0.02       99.92
         19 |          1        0.01       99.93
         22 |          2        0.02       99.95
         23 |          1        0.01       99.96
         24 |          2        0.02       99.98
         29 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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