Frequencies for first 10,000 rows of pct012c016 variable in sf12000860us18 dataset :

   13 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,588       85.88       85.88
          1 |        963        9.63       95.51
          2 |        241        2.41       97.92
          3 |         78        0.78       98.70
          4 |         51        0.51       99.21
          5 |         13        0.13       99.34
          6 |         12        0.12       99.46
          7 |         13        0.13       99.59
          8 |          8        0.08       99.67
          9 |          5        0.05       99.72
         10 |          5        0.05       99.77
         11 |         11        0.11       99.88
         14 |          2        0.02       99.90
         18 |          1        0.01       99.91
         22 |          2        0.02       99.93
         40 |          1        0.01       99.94
         42 |          1        0.01       99.95
         48 |          1        0.01       99.96
         62 |          1        0.01       99.97
         70 |          1        0.01       99.98
         88 |          1        0.01       99.99
         97 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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