Frequencies for first 10,000 rows of race variable in person dataset :

       Race |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,740       57.40       57.40
          1 |      1,555       15.55       72.95
          2 |        353        3.53       76.48
          3 |        127        1.27       77.75
          4 |          2        0.02       77.77
         18 |          1        0.01       77.78
         78 |          7        0.07       77.85
         98 |         24        0.24       78.09
         99 |      2,191       21.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016