Frequencies for first 10,000 rows of stresexp variable in natlterr2002 dataset :

   Expanded |
   State of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |          1        0.01        0.01
         20 |          1        0.01        0.02
         33 |          1        0.01        0.03
         40 |          1        0.01        0.04
         53 |      9,979       99.79       99.83
         54 |          7        0.07       99.90
         60 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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