Frequencies for first 10,000 rows of pct012c148 variable in sf12010860us22 dataset :

   41 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,365       83.65       83.65
          1 |      1,029       10.29       93.94
          2 |        320        3.20       97.14
          3 |        143        1.43       98.57
          4 |         52        0.52       99.09
          5 |         26        0.26       99.35
          6 |         21        0.21       99.56
          7 |         10        0.10       99.66
          8 |          6        0.06       99.72
          9 |          5        0.05       99.77
         10 |          7        0.07       99.84
         11 |          2        0.02       99.86
         12 |          1        0.01       99.87
         13 |          1        0.01       99.88
         14 |          2        0.02       99.90
         16 |          1        0.01       99.91
         20 |          1        0.01       99.92
         22 |          1        0.01       99.93
         30 |          2        0.02       99.95
         32 |          1        0.01       99.96
         52 |          2        0.02       99.98
         56 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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