Frequencies for first 10,000 rows of pct012k051 variable in sf12000860us26 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,854       88.54       88.54
          1 |        894        8.94       97.48
          2 |        156        1.56       99.04
          3 |         55        0.55       99.59
          4 |         14        0.14       99.73
          5 |          6        0.06       99.79
          6 |          4        0.04       99.83
          7 |          2        0.02       99.85
          8 |          2        0.02       99.87
          9 |          1        0.01       99.88
         10 |          1        0.01       99.89
         12 |          1        0.01       99.90
         16 |          1        0.01       99.91
         19 |          1        0.01       99.92
         23 |          2        0.02       99.94
         27 |          1        0.01       99.95
         35 |          1        0.01       99.96
         45 |          1        0.01       99.97
         48 |          1        0.01       99.98
         54 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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