Frequencies for first 10,000 rows of pct012n131 variable in sf12000860us29 dataset :

   24 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,187       91.87       91.87
          1 |        509        5.09       96.96
          2 |        159        1.59       98.55
          3 |         52        0.52       99.07
          4 |         18        0.18       99.25
          5 |         23        0.23       99.48
          6 |         11        0.11       99.59
          7 |          9        0.09       99.68
          8 |          9        0.09       99.77
          9 |          3        0.03       99.80
         10 |          5        0.05       99.85
         11 |          2        0.02       99.87
         13 |          2        0.02       99.89
         14 |          1        0.01       99.90
         15 |          2        0.02       99.92
         21 |          1        0.01       99.93
         22 |          3        0.03       99.96
         28 |          1        0.01       99.97
         31 |          1        0.01       99.98
         32 |          1        0.01       99.99
         52 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017