Frequencies for first 10,000 rows of pct012j100 variable in sf12010880us29 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,775       97.75       97.75
          1 |        168        1.68       99.43
          2 |         35        0.35       99.78
          3 |         16        0.16       99.94
          4 |          3        0.03       99.97
          5 |          2        0.02       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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