Frequencies for first 10,000 rows of pct012o053 variable in sf12010860us34 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,031       70.31       70.31
          1 |      1,550       15.50       85.81
          2 |        582        5.82       91.63
          3 |        346        3.46       95.09
          4 |        184        1.84       96.93
          5 |        124        1.24       98.17
          6 |         63        0.63       98.80
          7 |         47        0.47       99.27
          8 |         20        0.20       99.47
          9 |          9        0.09       99.56
         10 |         13        0.13       99.69
         11 |          7        0.07       99.76
         12 |          8        0.08       99.84
         13 |          4        0.04       99.88
         14 |          3        0.03       99.91
         16 |          1        0.01       99.92
         17 |          2        0.02       99.94
         20 |          2        0.02       99.96
         21 |          1        0.01       99.97
         25 |          1        0.01       99.98
         47 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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