Frequencies for first 10,000 rows of occp_cod_num variable in demo2009q3 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      2,604       26.04       26.04
                   LW Lawyer |        386        3.86       29.90
                MD Physician |      3,238       32.38       62.28
OT Other health-professional |      2,158       21.58       83.86
               PH Pharmacist |        504        5.04       88.90
                           . |      1,110       11.10      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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