Frequencies for first 10,000 rows of ld_augm variable in natl2014 dataset :

Augmentatio |
 n of Labor |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,332       83.32       83.32
          U |         73        0.73       84.05
          Y |      1,595       15.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016