Frequencies for first 10,000 rows of mrace variable in natl1999 dataset :

    Race of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,671       66.71       66.71
          2 |      3,253       32.53       99.24
          3 |         20        0.20       99.44
          4 |         15        0.15       99.59
          5 |          7        0.07       99.66
          7 |          5        0.05       99.71
         78 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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