Frequencies for first 10,000 rows of pct012n107 variable in sf12010880us33 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,891       88.91       88.91
          1 |        633        6.33       95.24
          2 |        236        2.36       97.60
          3 |         99        0.99       98.59
          4 |         53        0.53       99.12
          5 |         33        0.33       99.45
          6 |         16        0.16       99.61
          7 |          6        0.06       99.67
          8 |          7        0.07       99.74
          9 |          2        0.02       99.76
         10 |          2        0.02       99.78
         11 |          3        0.03       99.81
         12 |          6        0.06       99.87
         13 |          4        0.04       99.91
         15 |          1        0.01       99.92
         16 |          1        0.01       99.93
         21 |          1        0.01       99.94
         22 |          2        0.02       99.96
         23 |          1        0.01       99.97
         27 |          1        0.01       99.98
         38 |          1        0.01       99.99
         51 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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