Frequencies for first 10,000 rows of dplural variable in natl1989 dataset :

  Plurality |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,804       98.04       98.04
          2 |        190        1.90       99.94
          3 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016