Frequencies for first 10,000 rows of occp_cod_num variable in demo2008q1 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      3,178       31.78       31.78
                   LW Lawyer |        211        2.11       33.89
                MD Physician |      3,424       34.24       68.13
OT Other health-professional |      1,498       14.98       83.11
               PH Pharmacist |        578        5.78       88.89
                           . |      1,111       11.11      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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