Frequencies for first 10,000 rows of occp_cod_num variable in demo2006q3 dataset :

                occp_cod_num |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                 CN Consumer |      2,383       23.83       23.83
                   LW Lawyer |        288        2.88       26.71
                MD Physician |      3,446       34.46       61.17
OT Other health-professional |      1,577       15.77       76.94
               PH Pharmacist |        792        7.92       84.86
                           . |      1,514       15.14      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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