Frequencies for first 10,000 rows of pct012o195 variable in sf12000860us30 dataset :

   88 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,503       95.03       95.03
          1 |        419        4.19       99.22
          2 |         56        0.56       99.78
          3 |         13        0.13       99.91
          4 |          8        0.08       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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