Frequencies for first 10,000 rows of vctnl_gdnc_srvc_cd variable in pos2005 dataset :

       srv: |
 vocational |
   guidance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,314       83.14       83.14
          0 |      1,643       16.43       99.57
          1 |          9        0.09       99.66
          2 |         31        0.31       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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