Frequencies for first 10,000 rows of rept_cod variable in demo2006q1 dataset :

   Code for |
the type of |
     report |
  submitted |      Freq.     Percent        Cum.
------------+-----------------------------------
        DIR |        909        9.09        9.09
        EXP |      8,722       87.22       96.31
        PER |        369        3.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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