Frequencies for first 10,000 rows of pct012k203 variable in sf12010860us30 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,973       99.73       99.73
          1 |         20        0.20       99.93
          2 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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