Frequencies for first 10,000 rows of pct012k132 variable in sf12000860us26 dataset :

   25 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,966       89.66       89.66
          1 |        769        7.69       97.35
          2 |        157        1.57       98.92
          3 |         55        0.55       99.47
          4 |         19        0.19       99.66
          5 |          9        0.09       99.75
          6 |          4        0.04       99.79
          7 |          1        0.01       99.80
          8 |          4        0.04       99.84
          9 |          1        0.01       99.85
         10 |          1        0.01       99.86
         13 |          2        0.02       99.88
         14 |          1        0.01       99.89
         15 |          1        0.01       99.90
         16 |          1        0.01       99.91
         17 |          1        0.01       99.92
         21 |          1        0.01       99.93
         24 |          1        0.01       99.94
         30 |          1        0.01       99.95
         32 |          1        0.01       99.96
         56 |          1        0.01       99.97
         61 |          1        0.01       99.98
         71 |          1        0.01       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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