Frequencies for first 10,000 rows of pct012n195 variable in sf12010880us33 dataset :

   88 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,925       99.25       99.25
          1 |         59        0.59       99.84
          2 |         11        0.11       99.95
          3 |          3        0.03       99.98
          6 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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