Frequencies for first 10,000 rows of rept_cod_num variable in demo2018q1 datase rept_cod_num | Freq. Percent Cum. -----------------------+----------------------------------- EXP Expedited (15-Day) | 6,303 63.03 63.03 PER Periodic | 3,697 36.97 100.00 -----------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 19 Jun 2018