Frequencies for first 10,000 rows of frace variable in natl1976 dataset :

    Race of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,157       61.57       61.57
          2 |      1,791       17.91       79.48
          3 |          1        0.01       79.49
          4 |          3        0.03       79.52
          6 |          1        0.01       79.53
          7 |         10        0.10       79.63
          9 |      2,037       20.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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