Frequencies for first 10,000 rows of pct012n031 variable in sf12010860us33 dataset :

   28 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,995       89.95       89.95
          1 |        608        6.08       96.03
          2 |        178        1.78       97.81
          3 |         81        0.81       98.62
          4 |         33        0.33       98.95
          5 |         27        0.27       99.22
          6 |         13        0.13       99.35
          7 |         14        0.14       99.49
          8 |         10        0.10       99.59
          9 |          6        0.06       99.65
         10 |          6        0.06       99.71
         11 |          2        0.02       99.73
         12 |          3        0.03       99.76
         14 |          4        0.04       99.80
         16 |          2        0.02       99.82
         17 |          1        0.01       99.83
         19 |          4        0.04       99.87
         20 |          2        0.02       99.89
         22 |          1        0.01       99.90
         23 |          1        0.01       99.91
         27 |          1        0.01       99.92
         30 |          1        0.01       99.93
         31 |          2        0.02       99.95
         33 |          1        0.01       99.96
         37 |          1        0.01       99.97
         44 |          1        0.01       99.98
         46 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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