Frequencies for first 10,000 rows of frace variable in natl2001 dataset :

    Race of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,928       59.28       59.28
          2 |      1,849       18.49       77.77
          3 |         27        0.27       78.04
          4 |         18        0.18       78.22
          7 |          2        0.02       78.24
         78 |         43        0.43       78.67
         99 |      2,133       21.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015