Frequencies for first 10,000 rows of occp_cod_num variable in demo2006q1 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      1,567       15.67       15.67
                   LW Lawyer |      1,655       16.55       32.22
                MD Physician |      3,030       30.30       62.52
OT Other health-professional |      1,314       13.14       75.66
               PH Pharmacist |        621        6.21       81.87
                           . |      1,813       18.13      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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