Frequencies for first 10,000 rows of pct012k142 variable in sf12000860us26 dataset :

   35 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,658       86.58       86.58
          1 |        968        9.68       96.26
          2 |        233        2.33       98.59
          3 |         64        0.64       99.23
          4 |         33        0.33       99.56
          5 |         15        0.15       99.71
          6 |          5        0.05       99.76
          7 |          5        0.05       99.81
          8 |          4        0.04       99.85
          9 |          2        0.02       99.87
         11 |          1        0.01       99.88
         14 |          1        0.01       99.89
         15 |          2        0.02       99.91
         19 |          1        0.01       99.92
         22 |          1        0.01       99.93
         23 |          1        0.01       99.94
         30 |          1        0.01       99.95
         38 |          1        0.01       99.96
         54 |          1        0.01       99.97
         70 |          1        0.01       99.98
         72 |          1        0.01       99.99
         83 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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