Frequencies for first 10,000 rows of stresexp variable in natlterr1998 dataset :

   Expanded |
   State of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |          3        0.03        0.03
         31 |          1        0.01        0.04
         53 |      9,987       99.87       99.91
         54 |          4        0.04       99.95
         60 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015