Frequencies for first 10,000 rows of ethun variable in nhamcsed2012 dataset :

   Unimputed ethnicity |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 Blank |      3,428       34.28       34.28
    Hispanic or Latino |      1,109       11.09       45.37
Not Hispanic or Latino |      5,463       54.63      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016