Frequencies for first 10,000 rows of pct012n023 variable in sf12010860us33 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,862       88.62       88.62
          1 |        684        6.84       95.46
          2 |        236        2.36       97.82
          3 |         93        0.93       98.75
          4 |         38        0.38       99.13
          5 |         22        0.22       99.35
          6 |         10        0.10       99.45
          7 |         14        0.14       99.59
          8 |         10        0.10       99.69
          9 |          4        0.04       99.73
         10 |          2        0.02       99.75
         11 |          2        0.02       99.77
         12 |          4        0.04       99.81
         13 |          3        0.03       99.84
         14 |          2        0.02       99.86
         15 |          1        0.01       99.87
         16 |          2        0.02       99.89
         17 |          1        0.01       99.90
         18 |          2        0.02       99.92
         19 |          1        0.01       99.93
         20 |          1        0.01       99.94
         22 |          1        0.01       99.95
         28 |          1        0.01       99.96
         32 |          1        0.01       99.97
         41 |          1        0.01       99.98
         46 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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