Frequencies for first 10,000 rows of pct012n064 variable in sf12010880us33 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,617       96.17       96.17
          1 |        272        2.72       98.89
          2 |         63        0.63       99.52
          3 |         24        0.24       99.76
          4 |          7        0.07       99.83
          5 |          3        0.03       99.86
          6 |          3        0.03       99.89
          7 |          1        0.01       99.90
          8 |          1        0.01       99.91
          9 |          1        0.01       99.92
         10 |          1        0.01       99.93
         11 |          2        0.02       99.95
         12 |          2        0.02       99.97
         14 |          1        0.01       99.98
         17 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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