Frequencies for first 10,000 rows of rept_cod_num variable in demo2013q2 datase rept_cod_num | Freq. Percent Cum. -----------------------+----------------------------------- EXP Expedited (15-Day) | 7,088 70.88 70.88 PER Periodic | 2,912 29.12 100.00 -----------------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017