Frequencies for first 10,000 rows of pct012g198 variable in sf12010880us26 dataset :

   91 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,646       96.46       96.46
          1 |        307        3.07       99.53
          2 |         35        0.35       99.88
          3 |          4        0.04       99.92
          4 |          5        0.05       99.97
          5 |          2        0.02       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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