Frequencies for first 10,000 rows of pct012n163 variable in sf12010880us33 dataset :

   56 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,441       94.41       94.41
          1 |        395        3.95       98.36
          2 |         85        0.85       99.21
          3 |         26        0.26       99.47
          4 |         16        0.16       99.63
          5 |         10        0.10       99.73
          6 |          5        0.05       99.78
          7 |          3        0.03       99.81
          8 |          3        0.03       99.84
          9 |          5        0.05       99.89
         10 |          3        0.03       99.92
         12 |          1        0.01       99.93
         13 |          1        0.01       99.94
         17 |          1        0.01       99.95
         18 |          1        0.01       99.96
         22 |          1        0.01       99.97
         27 |          1        0.01       99.98
         33 |          1        0.01       99.99
         38 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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