Frequencies for first 10,000 rows of pct012n073 variable in sf12010860us33 dataset :

   70 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,782       97.82       97.82
          1 |        174        1.74       99.56
          2 |         26        0.26       99.82
          3 |         10        0.10       99.92
          5 |          2        0.02       99.94
          7 |          3        0.03       99.97
          8 |          1        0.01       99.98
          9 |          1        0.01       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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