Frequencies for fire_exp variable in person dataset :

       FIRE |
 OCCURRENCE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        880       81.71       81.71
          1 |          4        0.37       82.08
          . |        193       17.92      100.00
------------+-----------------------------------
      Total |      1,077      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016