Frequencies for first 10,000 rows of pct012g200 variable in sf12000860us22 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,747       97.47       97.47
          1 |        215        2.15       99.62
          2 |         32        0.32       99.94
          3 |          4        0.04       99.98
          5 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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