Frequencies for first 10,000 rows of pct012g074 variable in sf12010860us26 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,432       84.32       84.32
          1 |      1,037       10.37       94.69
          2 |        280        2.80       97.49
          3 |        105        1.05       98.54
          4 |         52        0.52       99.06
          5 |         31        0.31       99.37
          6 |         19        0.19       99.56
          7 |         10        0.10       99.66
          8 |         11        0.11       99.77
          9 |          8        0.08       99.85
         10 |          7        0.07       99.92
         11 |          2        0.02       99.94
         12 |          3        0.03       99.97
         13 |          1        0.01       99.98
         16 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017