Frequencies for first 10,000 rows of rept_cod variable in demo2007q2 dataset :

   Code for |
the type of |
     report |
  submitted |      Freq.     Percent        Cum.
------------+-----------------------------------
        DIR |        920        9.20        9.20
        EXP |      8,977       89.77       98.97
        PER |        103        1.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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