Frequencies for first 10,000 rows of pct012c032 variable in sf12000860us18 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,469       84.69       84.69
          1 |        983        9.83       94.52
          2 |        294        2.94       97.46
          3 |        119        1.19       98.65
          4 |         56        0.56       99.21
          5 |         31        0.31       99.52
          6 |         14        0.14       99.66
          7 |          9        0.09       99.75
          8 |          7        0.07       99.82
          9 |          1        0.01       99.83
         10 |          2        0.02       99.85
         11 |          2        0.02       99.87
         12 |          1        0.01       99.88
         13 |          2        0.02       99.90
         15 |          1        0.01       99.91
         23 |          1        0.01       99.92
         24 |          1        0.01       99.93
         31 |          1        0.01       99.94
         32 |          1        0.01       99.95
         38 |          1        0.01       99.96
         49 |          1        0.01       99.97
         61 |          1        0.01       99.98
         70 |          1        0.01       99.99
         91 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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