Frequencies for first 10,000 rows of pct012c121 variable in sf12000860us18 dataset :

   14 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,661       86.61       86.61
          1 |        898        8.98       95.59
          2 |        249        2.49       98.08
          3 |         80        0.80       98.88
          4 |         38        0.38       99.26
          5 |         22        0.22       99.48
          6 |         13        0.13       99.61
          7 |          9        0.09       99.70
          8 |          6        0.06       99.76
          9 |          7        0.07       99.83
         10 |          2        0.02       99.85
         11 |          1        0.01       99.86
         13 |          2        0.02       99.88
         16 |          1        0.01       99.89
         21 |          2        0.02       99.91
         25 |          1        0.01       99.92
         32 |          2        0.02       99.94
         34 |          1        0.01       99.95
         38 |          1        0.01       99.96
         47 |          1        0.01       99.97
         52 |          1        0.01       99.98
         65 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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