Frequencies for first 10,000 rows of pct012o070 variable in sf12010860us34 dataset :

   67 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,316       83.16       83.16
          1 |      1,217       12.17       95.33
          2 |        318        3.18       98.51
          3 |         87        0.87       99.38
          4 |         41        0.41       99.79
          5 |          9        0.09       99.88
          6 |          4        0.04       99.92
          7 |          2        0.02       99.94
          8 |          3        0.03       99.97
         12 |          1        0.01       99.98
         14 |          1        0.01       99.99
         26 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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