Frequencies for first 10,000 rows of pct012k019 variable in sf12000860us26 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,809       88.09       88.09
          1 |        890        8.90       96.99
          2 |        184        1.84       98.83
          3 |         52        0.52       99.35
          4 |         18        0.18       99.53
          5 |         10        0.10       99.63
          6 |          7        0.07       99.70
          7 |          8        0.08       99.78
          8 |          4        0.04       99.82
          9 |          2        0.02       99.84
         10 |          1        0.01       99.85
         11 |          3        0.03       99.88
         12 |          2        0.02       99.90
         21 |          1        0.01       99.91
         22 |          1        0.01       99.92
         33 |          1        0.01       99.93
         34 |          1        0.01       99.94
         43 |          1        0.01       99.95
         47 |          1        0.01       99.96
         53 |          1        0.01       99.97
         57 |          1        0.01       99.98
         61 |          1        0.01       99.99
         67 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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