Frequencies for first 10,000 rows of pct012o140 variable in sf12010860us34 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,876       68.76       68.76
          1 |      1,296       12.96       81.72
          2 |        563        5.63       87.35
          3 |        371        3.71       91.06
          4 |        248        2.48       93.54
          5 |        159        1.59       95.13
          6 |        142        1.42       96.55
          7 |         86        0.86       97.41
          8 |         56        0.56       97.97
          9 |         46        0.46       98.43
         10 |         35        0.35       98.78
         11 |         34        0.34       99.12
         12 |         15        0.15       99.27
         13 |         17        0.17       99.44
         14 |          9        0.09       99.53
         15 |          8        0.08       99.61
         16 |         15        0.15       99.76
         17 |          7        0.07       99.83
         18 |          7        0.07       99.90
         19 |          3        0.03       99.93
         20 |          1        0.01       99.94
         22 |          2        0.02       99.96
         27 |          1        0.01       99.97
         41 |          1        0.01       99.98
         50 |          1        0.01       99.99
         51 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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