Frequencies for first 10,000 rows of frace variable in natl2012 dataset :

   Father's |
     Race U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,880       58.80       58.80
          2 |        472        4.72       63.52
          3 |      1,432       14.32       77.84
          4 |         11        0.11       77.95
          5 |          6        0.06       78.01
          6 |         35        0.35       78.36
          7 |        225        2.25       80.61
         78 |        500        5.00       85.61
         99 |      1,439       14.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016