Frequencies for first 10,000 rows of pct012n027 variable in sf12010860us33 dataset :

   24 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,957       89.57       89.57
          1 |        655        6.55       96.12
          2 |        186        1.86       97.98
          3 |         78        0.78       98.76
          4 |         38        0.38       99.14
          5 |         22        0.22       99.36
          6 |         10        0.10       99.46
          7 |          7        0.07       99.53
          8 |          4        0.04       99.57
          9 |          7        0.07       99.64
         10 |          4        0.04       99.68
         11 |          5        0.05       99.73
         12 |          5        0.05       99.78
         13 |          2        0.02       99.80
         14 |          3        0.03       99.83
         16 |          3        0.03       99.86
         17 |          2        0.02       99.88
         22 |          2        0.02       99.90
         23 |          1        0.01       99.91
         24 |          2        0.02       99.93
         28 |          1        0.01       99.94
         29 |          1        0.01       99.95
         33 |          2        0.02       99.97
         38 |          1        0.01       99.98
         40 |          1        0.01       99.99
         49 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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