Frequencies for first 10,000 rows of occp_cod_num variable in demo2005q2 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      1,268       12.68       12.68
                   LW Lawyer |        229        2.29       14.97
                MD Physician |      3,241       32.41       47.38
OT Other health-professional |      1,364       13.64       61.02
               PH Pharmacist |        524        5.24       66.26
                           . |      3,374       33.74      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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