Frequencies for first 10,000 rows of rept_cod variable in demo2006q2 dataset :

   Code for |
the type of |
     report |
  submitted |      Freq.     Percent        Cum.
------------+-----------------------------------
        DIR |        754        7.54        7.54
        EXP |      9,076       90.76       98.30
        PER |        170        1.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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