Frequencies for first 10,000 rows of rept_cod_num variable in demo2017q1 dataset :

          rept_cod_num |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
EXP Expedited (15-Day) |      7,226       72.26       72.26
          PER Periodic |      2,774       27.74      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Sep 2017