Frequencies for first 10,000 rows of fire_exp variable in person dataset :

       Fire |
 Occurrence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,858       88.58       88.58
          1 |        290        2.90       91.48
          . |        852        8.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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