Frequencies for first 10,000 rows of rept_cod_num variable in demo2013q4 datase rept_cod_num | Freq. Percent Cum. -----------------------+----------------------------------- EXP Expedited (15-Day) | 5,859 58.59 58.59 PER Periodic | 4,141 41.41 100.00 -----------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017