Frequencies for first 10,000 rows of ld_augm variable in natl2017 dataset :

Augmentatio |
 n of Labor |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      8,126       81.26       81.26
          U |         31        0.31       81.57
          Y |      1,843       18.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Sep 2018