Frequencies for first 10,000 rows of pct012o159 variable in sf12010860us34 dataset :

   52 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,051       70.51       70.51
          1 |      1,508       15.08       85.59
          2 |        607        6.07       91.66
          3 |        303        3.03       94.69
          4 |        188        1.88       96.57
          5 |        127        1.27       97.84
          6 |         60        0.60       98.44
          7 |         57        0.57       99.01
          8 |         27        0.27       99.28
          9 |         19        0.19       99.47
         10 |         16        0.16       99.63
         11 |          9        0.09       99.72
         12 |          9        0.09       99.81
         13 |          8        0.08       99.89
         14 |          2        0.02       99.91
         18 |          2        0.02       99.93
         19 |          2        0.02       99.95
         20 |          3        0.03       99.98
         37 |          1        0.01       99.99
         46 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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