Frequencies for first 10,000 rows of pct012o197 variable in sf12000860us30 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,649       96.49       96.49
          1 |        302        3.02       99.51
          2 |         36        0.36       99.87
          3 |         10        0.10       99.97
          4 |          2        0.02       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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