Frequencies for first 10,000 rows of pct012o160 variable in sf12000860us30 dataset :

   53 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,586       75.86       75.86
          1 |      1,327       13.27       89.13
          2 |        492        4.92       94.05
          3 |        231        2.31       96.36
          4 |        128        1.28       97.64
          5 |         73        0.73       98.37
          6 |         53        0.53       98.90
          7 |         25        0.25       99.15
          8 |         22        0.22       99.37
          9 |         10        0.10       99.47
         10 |         10        0.10       99.57
         11 |          7        0.07       99.64
         12 |          9        0.09       99.73
         13 |          8        0.08       99.81
         14 |          4        0.04       99.85
         15 |          6        0.06       99.91
         17 |          5        0.05       99.96
         19 |          2        0.02       99.98
         27 |          1        0.01       99.99
         34 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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