Frequencies for first 10,000 rows of pct012g093 variable in sf12000860us22 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,798       97.98       97.98
          1 |        170        1.70       99.68
          2 |         26        0.26       99.94
          3 |          3        0.03       99.97
          4 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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