Frequencies for first 10,000 rows of vctnl_gdnc_srvc_cd variable in pos2008 dataset :

       srv: |
 vocational |
   guidance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,105       81.05       81.05
          0 |      1,845       18.45       99.50
          1 |         11        0.11       99.61
          2 |         36        0.36       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017