Frequencies for first 10,000 rows of pct012k051 variable in sf12010860us30 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,624       86.24       86.24
          1 |      1,007       10.07       96.31
          2 |        233        2.33       98.64
          3 |         76        0.76       99.40
          4 |         21        0.21       99.61
          5 |         11        0.11       99.72
          6 |          6        0.06       99.78
          7 |          6        0.06       99.84
          8 |          2        0.02       99.86
         11 |          2        0.02       99.88
         12 |          1        0.01       99.89
         14 |          1        0.01       99.90
         21 |          1        0.01       99.91
         23 |          1        0.01       99.92
         26 |          1        0.01       99.93
         33 |          2        0.02       99.95
         34 |          1        0.01       99.96
         43 |          1        0.01       99.97
         54 |          1        0.01       99.98
         72 |          1        0.01       99.99
         73 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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