Frequencies for region variable in impact2007 dataset :

     Region |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        147        4.00        4.00
          2 |        429       11.67       15.66
          3 |        611       16.62       32.28
          4 |        520       14.14       46.42
          5 |        346        9.41       55.83
          6 |        282        7.67       63.50
          7 |        573       15.58       79.09
          8 |        245        6.66       85.75
          9 |        471       12.81       98.56
         40 |         53        1.44      100.00
------------+-----------------------------------
      Total |      3,677      100.00

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