Frequencies for first 10,000 rows of ethnicrflg variable in natl1981 dataset :

  Ethnicity |
 (by State) |
       flag |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,840       98.40       98.40
          1 |        159        1.59       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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