Frequencies for region variable in impact2006 dataset :

     Region |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        154        4.03        4.03
          2 |        441       11.53       15.56
          3 |        623       16.29       31.85
          4 |        550       14.38       46.23
          5 |        369        9.65       55.88
          6 |        328        8.58       64.46
          7 |        586       15.32       79.79
          8 |        247        6.46       86.24
          9 |        474       12.40       98.64
         40 |         52        1.36      100.00
------------+-----------------------------------
      Total |      3,824      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016