Frequencies for first 10,000 rows of pct012n167 variable in sf12010880us33 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,541       95.41       95.41
          1 |        326        3.26       98.67
          2 |         66        0.66       99.33
          3 |         24        0.24       99.57
          4 |         13        0.13       99.70
          5 |          6        0.06       99.76
          6 |          7        0.07       99.83
          7 |          4        0.04       99.87
          8 |          1        0.01       99.88
          9 |          2        0.02       99.90
         10 |          2        0.02       99.92
         12 |          2        0.02       99.94
         13 |          1        0.01       99.95
         16 |          1        0.01       99.96
         22 |          1        0.01       99.97
         27 |          1        0.01       99.98
         28 |          1        0.01       99.99
         30 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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