Frequencies for first 10,000 rows of pct012o055 variable in sf12010860us34 dataset :

   52 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,100       71.00       71.00
          1 |      1,493       14.93       85.93
          2 |        657        6.57       92.50
          3 |        337        3.37       95.87
          4 |        167        1.67       97.54
          5 |         97        0.97       98.51
          6 |         46        0.46       98.97
          7 |         30        0.30       99.27
          8 |         23        0.23       99.50
          9 |         17        0.17       99.67
         10 |         13        0.13       99.80
         11 |          4        0.04       99.84
         12 |          4        0.04       99.88
         13 |          3        0.03       99.91
         14 |          2        0.02       99.93
         17 |          2        0.02       99.95
         18 |          1        0.01       99.96
         19 |          2        0.02       99.98
         24 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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