Frequencies for first 10,000 rows of ld_augm variable in natl2015 dataset :

Augmentatio |
 n of Labor |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,178       81.78       81.78
          U |         63        0.63       82.41
          Y |      1,759       17.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016