Frequencies for first 10,000 rows of pct012k143 variable in sf12000860us26 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,687       86.87       86.87
          1 |        946        9.46       96.33
          2 |        215        2.15       98.48
          3 |         72        0.72       99.20
          4 |         32        0.32       99.52
          5 |         14        0.14       99.66
          6 |         10        0.10       99.76
          7 |          3        0.03       99.79
          8 |          3        0.03       99.82
          9 |          2        0.02       99.84
         10 |          2        0.02       99.86
         11 |          1        0.01       99.87
         12 |          2        0.02       99.89
         14 |          1        0.01       99.90
         18 |          1        0.01       99.91
         19 |          1        0.01       99.92
         35 |          2        0.02       99.94
         38 |          1        0.01       99.95
         44 |          1        0.01       99.96
         50 |          1        0.01       99.97
         57 |          1        0.01       99.98
         62 |          1        0.01       99.99
         86 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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