Frequencies for first 10,000 rows of pct012n034 variable in sf12010880us33 dataset :

   31 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,174       91.74       91.74
          1 |        491        4.91       96.65
          2 |        139        1.39       98.04
          3 |         61        0.61       98.65
          4 |         38        0.38       99.03
          5 |         28        0.28       99.31
          6 |         14        0.14       99.45
          7 |         11        0.11       99.56
          8 |          6        0.06       99.62
          9 |          4        0.04       99.66
         10 |          3        0.03       99.69
         11 |          5        0.05       99.74
         12 |          2        0.02       99.76
         13 |          3        0.03       99.79
         14 |          4        0.04       99.83
         15 |          3        0.03       99.86
         16 |          1        0.01       99.87
         17 |          2        0.02       99.89
         18 |          1        0.01       99.90
         22 |          1        0.01       99.91
         24 |          1        0.01       99.92
         25 |          1        0.01       99.93
         26 |          1        0.01       99.94
         27 |          2        0.02       99.96
         34 |          1        0.01       99.97
         42 |          1        0.01       99.98
         44 |          1        0.01       99.99
         50 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017