Frequencies for first 10,000 rows of pct012g179 variable in sf12010860us26 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,359       83.59       83.59
          1 |      1,032       10.32       93.91
          2 |        300        3.00       96.91
          3 |        114        1.14       98.05
          4 |         57        0.57       98.62
          5 |         39        0.39       99.01
          6 |         32        0.32       99.33
          7 |         20        0.20       99.53
          8 |         11        0.11       99.64
          9 |         12        0.12       99.76
         10 |          7        0.07       99.83
         11 |          2        0.02       99.85
         13 |          4        0.04       99.89
         14 |          4        0.04       99.93
         16 |          3        0.03       99.96
         17 |          2        0.02       99.98
         18 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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