Frequencies for first 10,000 rows of occp_cod_num variable in demo2008q4 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      3,030       30.30       30.30
                   LW Lawyer |        183        1.83       32.13
                MD Physician |      3,082       30.82       62.95
OT Other health-professional |      1,679       16.79       79.74
               PH Pharmacist |        568        5.68       85.42
                           . |      1,458       14.58      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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