Frequencies for first 10,000 rows of rf_artec variable in natlterr2014 dataset 

      Asst. |
Reproductiv |
          e |
 Technology |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          N |          4        0.04       10.81
          U |         85        0.85       11.66
          X |      8,831       88.31       99.97
          Y |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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