Frequencies for country variable in enfrep20130807 dataset :

    Country |      Freq.     Percent        Cum.
------------+-----------------------------------
         GB |          1        0.73        0.73
         US |        136       99.27      100.00
------------+-----------------------------------
      Total |        137      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015