Frequencies for first 10,000 rows of mrace variable in natl1988 dataset :

    Race of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         61        0.61        0.61
          1 |      6,484       64.84       65.45
          2 |      3,431       34.31       99.76
          3 |         10        0.10       99.86
          4 |          4        0.04       99.90
          5 |          2        0.02       99.92
          6 |          1        0.01       99.93
          7 |          1        0.01       99.94
          8 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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