Frequencies for first 10,000 rows of pct012k151 variable in sf12000860us26 dataset :

   44 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,668       86.68       86.68
          1 |        979        9.79       96.47
          2 |        233        2.33       98.80
          3 |         66        0.66       99.46
          4 |         22        0.22       99.68
          5 |          7        0.07       99.75
          6 |          3        0.03       99.78
          7 |          3        0.03       99.81
          8 |          1        0.01       99.82
          9 |          2        0.02       99.84
         10 |          2        0.02       99.86
         12 |          1        0.01       99.87
         13 |          2        0.02       99.89
         15 |          1        0.01       99.90
         25 |          2        0.02       99.92
         29 |          1        0.01       99.93
         35 |          1        0.01       99.94
         38 |          1        0.01       99.95
         41 |          1        0.01       99.96
         43 |          2        0.02       99.98
         70 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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