Frequencies for first 10,000 rows of pct012b102 variable in sf12010860us21 dataset :

   99 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,756       97.56       97.56
          1 |        204        2.04       99.60
          2 |         35        0.35       99.95
          3 |          3        0.03       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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