Frequencies for first 10,000 rows of pct012n157 variable in sf12010860us33 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,178       91.78       91.78
          1 |        546        5.46       97.24
          2 |        148        1.48       98.72
          3 |         43        0.43       99.15
          4 |         23        0.23       99.38
          5 |         11        0.11       99.49
          6 |         12        0.12       99.61
          7 |          6        0.06       99.67
          8 |          1        0.01       99.68
          9 |          6        0.06       99.74
         10 |          2        0.02       99.76
         11 |          1        0.01       99.77
         12 |          4        0.04       99.81
         13 |          4        0.04       99.85
         14 |          1        0.01       99.86
         16 |          3        0.03       99.89
         17 |          1        0.01       99.90
         18 |          2        0.02       99.92
         20 |          2        0.02       99.94
         21 |          2        0.02       99.96
         24 |          1        0.01       99.97
         39 |          1        0.01       99.98
         45 |          1        0.01       99.99
         54 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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