Frequencies for first 10,000 rows of pct012g075 variable in sf12010860us26 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,498       84.98       84.98
          1 |        985        9.85       94.83
          2 |        264        2.64       97.47
          3 |        105        1.05       98.52
          4 |         62        0.62       99.14
          5 |         31        0.31       99.45
          6 |         26        0.26       99.71
          7 |          9        0.09       99.80
          8 |          4        0.04       99.84
          9 |          5        0.05       99.89
         10 |          3        0.03       99.92
         12 |          2        0.02       99.94
         14 |          2        0.02       99.96
         15 |          1        0.01       99.97
         16 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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