Frequencies for first 10,000 rows of pct012n019 variable in sf12010880us33 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,887       88.87       88.87
          1 |        701        7.01       95.88
          2 |        215        2.15       98.03
          3 |         90        0.90       98.93
          4 |         32        0.32       99.25
          5 |         24        0.24       99.49
          6 |         12        0.12       99.61
          7 |          4        0.04       99.65
          8 |          6        0.06       99.71
          9 |          3        0.03       99.74
         10 |          5        0.05       99.79
         11 |          4        0.04       99.83
         12 |          2        0.02       99.85
         13 |          1        0.01       99.86
         14 |          3        0.03       99.89
         17 |          2        0.02       99.91
         20 |          1        0.01       99.92
         23 |          1        0.01       99.93
         24 |          3        0.03       99.96
         26 |          1        0.01       99.97
         38 |          1        0.01       99.98
         49 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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