Frequencies for first 10,000 rows of pct012g174 variable in sf12010880us26 dataset :

   67 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,240       82.40       82.40
          1 |        985        9.85       92.25
          2 |        308        3.08       95.33
          3 |        161        1.61       96.94
          4 |         96        0.96       97.90
          5 |         59        0.59       98.49
          6 |         31        0.31       98.80
          7 |         27        0.27       99.07
          8 |         19        0.19       99.26
          9 |         14        0.14       99.40
         10 |         11        0.11       99.51
         11 |          6        0.06       99.57
         12 |         12        0.12       99.69
         13 |          4        0.04       99.73
         14 |          2        0.02       99.75
         15 |          8        0.08       99.83
         16 |          5        0.05       99.88
         17 |          4        0.04       99.92
         18 |          2        0.02       99.94
         20 |          1        0.01       99.95
         21 |          1        0.01       99.96
         23 |          1        0.01       99.97
         24 |          1        0.01       99.98
         26 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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