Frequencies for first 10,000 rows of pct012k061 variable in sf12010880us30 dataset :

   58 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,208       92.08       92.08
          1 |        641        6.41       98.49
          2 |        112        1.12       99.61
          3 |         25        0.25       99.86
          4 |          7        0.07       99.93
          5 |          3        0.03       99.96
          6 |          1        0.01       99.97
          8 |          2        0.02       99.99
         14 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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