Frequencies for first 10,000 rows of pct012n045 variable in sf12010860us33 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,167       91.67       91.67
          1 |        542        5.42       97.09
          2 |        132        1.32       98.41
          3 |         53        0.53       98.94
          4 |         38        0.38       99.32
          5 |         14        0.14       99.46
          6 |         10        0.10       99.56
          7 |         13        0.13       99.69
          8 |          5        0.05       99.74
          9 |          1        0.01       99.75
         10 |          5        0.05       99.80
         11 |          2        0.02       99.82
         12 |          3        0.03       99.85
         13 |          1        0.01       99.86
         14 |          1        0.01       99.87
         15 |          1        0.01       99.88
         18 |          2        0.02       99.90
         19 |          2        0.02       99.92
         20 |          1        0.01       99.93
         24 |          1        0.01       99.94
         25 |          1        0.01       99.95
         27 |          1        0.01       99.96
         30 |          1        0.01       99.97
         31 |          1        0.01       99.98
         38 |          1        0.01       99.99
         45 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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