Frequencies for first 10,000 rows of pct012n147 variable in sf12010860us33 dataset :

   40 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,096       90.96       90.96
          1 |        578        5.78       96.74
          2 |        150        1.50       98.24
          3 |         72        0.72       98.96
          4 |         25        0.25       99.21
          5 |         11        0.11       99.32
          6 |         15        0.15       99.47
          7 |         12        0.12       99.59
          8 |          8        0.08       99.67
          9 |          5        0.05       99.72
         10 |          1        0.01       99.73
         11 |          4        0.04       99.77
         12 |          2        0.02       99.79
         13 |          1        0.01       99.80
         14 |          1        0.01       99.81
         15 |          5        0.05       99.86
         16 |          3        0.03       99.89
         17 |          1        0.01       99.90
         18 |          2        0.02       99.92
         19 |          1        0.01       99.93
         22 |          1        0.01       99.94
         24 |          1        0.01       99.95
         27 |          1        0.01       99.96
         28 |          1        0.01       99.97
         32 |          1        0.01       99.98
         45 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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